Packing

2112 cases · 9 beaten · 497 reproduced · 1606 behind

Pack n unit items (circles, or regular polygons, tans, dominoes and L's allowed to rotate) in the smallest container: circle, triangle, square, pentagon, hexagon, octagon, tan, domino, or the L (a 2x2 square with one corner unit square removed; the page lists its long side). Validated with exact decimal predicates and no overlap tolerance; the beaten circle-in-L cases were also checked in exact rational arithmetic by two independently written checkers.

Beaten (9)

All cases

showing cases
ProblemnListed on the pageOur certified valueMarginMargin %StatusListed by
Circles in a circle2r = 22.000000001−8.00e-10-0.000reproduced
Circles in a circle3r = 1 + 2 / √3 = 2.154+2.154700539−8.62e-10-0.000reproduced
Circles in a circle4r = 1 + √2 = 2.414+2.414213563−9.66e-10-0.000reproduced
Circles in a circle12r = 4.029+4.029601932−6.02e-04-0.015reproducedFound by Kravitz in 1967.
Circles in a circle14r = 4.328+4.328428557−4.29e-04-0.010reproducedFound by Goldberg in 1971.
Circles in a circle15r = 4.521+4.521356967−3.57e-04-0.008reproducedFound by Kravitz in 1967.
Circles in a circle16r = 4.615+4.615425597−4.26e-04-0.009reproducedFound by Goldberg in 1971.
Circles in a circle17r = 4.792+4.792033750−3.38e-05-0.001reproducedFound by Reis in 1975.
Circles in a circle18r = 1 + √2 + √6 = 4.863+4.863703307−1.95e-09-0.000reproducedFound by Kravitz in 1967.
Circles in a circle20r = 5.122+5.122320739−3.21e-04-0.006reproducedFound by Goldberg in 1971.
Circles in a hexagon2s = 1 + 2/√3 = 2.154+2.154700539−8.62e-10-0.000reproduced
Circles in a hexagon3s = 4/√3 = 2.309+2.309401078−9.24e-10-0.000reproduced
Circles in a hexagon4s = 2/√3 + 4/√7 = 2.666+2.666558431−1.07e-09-0.000reproducedFound by Shahriar Manzoor in April 2002.
Circles in a hexagon5s = 2.999+2.999355401−3.55e-04-0.012reproducedFound by Erich Friedman in 1999.
Circles in a hexagon6s = 2 + 2/√3 = 3.154+3.154700540−1.26e-09-0.000reproduced
Circles in a hexagon7s = 2 + 2/√3 = 3.154+3.154700540−1.26e-09-0.000reproduced
Circles in a hexagon8s = 3.709+3.709400096−4.00e-04-0.011reproducedFound by David W. Cantrell in July 2002.
Circles in a hexagon9s = 20/7 + 2/√3 = 4.011+4.011843397−1.60e-09-0.000reproducedFound by David W. Cantrell in July 2002.
Circles in a hexagon10s = 4.119+4.119357181−3.57e-04-0.009reproducedFound by David W. Cantrell in July 2002.
Circles in a hexagon11s = 2 + 4/√3 = 4.309+4.309401078−1.72e-09-0.000reproducedFound by Erich Friedman in 1999.
Circles in a hexagon12s = 2 + 4/√3 = 4.309+4.309401078−1.72e-09-0.000reproducedFound by Erich Friedman in 1999.
Circles in a hexagon13s = 8/√3 = 4.618+4.618802155−1.85e-09-0.000reproducedFound by Erich Friedman in 1999.
Circles in a hexagon14s = 2 + 2/√3 + 4/√7 = 4.666+4.666558432−1.87e-09-0.000reproducedFound by David W. Cantrell in July 2002.
Circles in a hexagon15s = 4.961+4.961321279−3.21e-04-0.006reproducedFound by David W. Cantrell in January 2006.
Circles in a hexagon16s = 4.999+4.999355401−3.55e-04-0.007reproducedFound by David W. Cantrell in July 2002.
Circles in a hexagon17s = 5.133+5.133119426−1.19e-04-0.002reproducedFound by David W. Cantrell in January 2006.
Circles in a hexagon18s = 4 + 2/√3 = 5.154+5.154700540−1.55e-09-0.000reproduced
Circles in a hexagon19s = 4 + 2/√3 = 5.154+5.154700540−1.55e-09-0.000reproduced
Circles in a hexagon20s = 5.676+5.676887318−8.87e-04-0.016reproducedFound by David W. Cantrell in July 2012.
Circles in a hexagon21s = 5.709+5.709400097−4.00e-04-0.007reproducedFound by David W. Cantrell in July 2012.
Circles in a hexagon22s = 5.952+5.951749794+2.50e-040.004reproducedFound by David W. Cantrell in July 2012.
Circles in a hexagon23s = 34/7 + 2/√3 = 6.011+6.011843397−1.80e-09-0.000reproducedFound by David W. Cantrell in July 2012.
Circles in a hexagon24s = 6.117+6.117620861−6.21e-04-0.010reproducedFound by Rob Pratt in March 2020.
Circles in a pentagon2s = 2tan(36°) + √5 - 1 s = 2.689+2.689153035−1.53e-04-0.006reproduced
Circles in a pentagon3s = 3.015+3.015862479−8.62e-04-0.029reproducedFound by George Sicherman in July 2012.
Circles in a pentagon4s = 3.314+3.314449566−4.50e-04-0.014reproducedFound by George Sicherman in July 2012.
Circles in a pentagon5s = 2tan(36°) + 2 s = 3.453+3.453085057−8.51e-05-0.002reproduced
Circles in a pentagon6s = 2tan(36°) + 4sin(36°) s = 3.804+3.804226067−2.26e-04-0.006reproduced
Circles in a pentagon7s = 4.236+4.236120738−1.21e-04-0.003reproducedFound by George Sicherman in July 2012.
Circles in a pentagon8s = 4.564+4.564580947−5.81e-04-0.013reproducedFound by George Sicherman in July 2012.
Circles in a pentagon9s = 4.825+4.825026360−2.64e-05-0.001reproducedFound by George Sicherman in July 2012.
Circles in a pentagon10s = 5.095+5.095192535−1.93e-04-0.004reproducedFound by George Sicherman in July 2012.
Circles in a pentagon11s = 5.240+5.240278496−2.78e-04-0.005reproducedFound by David W. Cantrell in July 2012.
Circles in a pentagon12s = 5.407+5.407790091−7.90e-04-0.015reproducedFound by George Sicherman in July 2012.
Circles in a pentagon13s = 5.651+5.651781418−7.81e-04-0.014reproducedFound by George Sicherman in July 2012.
Circles in a pentagon14s = 5.808+5.808533027−5.33e-04-0.009reproducedFound by George Sicherman in July 2012.
Circles in a pentagon15s = 5.945+5.945158606−1.59e-04-0.003reproducedFound by George Sicherman in July 2012.
Circles in a pentagon16s = 6.129+6.129607483−6.07e-04-0.010reproducedFound by George Sicherman in July 2012.
Circles in a pentagon17s = 6.419+6.419436755−4.37e-04-0.007reproducedFound by David W. Cantrell in July 2012.
Circles in a pentagon18s = 6.586+6.586813631−8.14e-04-0.012reproducedFound by David W. Cantrell in July 2012.
Circles in a pentagon19s = 6.777+6.777892052−8.92e-04-0.013reproducedFound by David W. Cantrell in July 2012.
Circles in a pentagon20s = 6.944+6.944556888−5.57e-04-0.008reproducedFound by David W. Cantrell in July 2012.
Circles in a pentagon21s = 7.107+7.107266889−2.67e-04-0.004reproducedFound by David W. Cantrell in July 2012.
Circles in a pentagon22s = 7.271+7.271271706−2.72e-04-0.004reproducedFound by David W. Cantrell in July 2012.
Circles in a pentagon23s = 7.397+7.397090335−9.03e-05-0.001reproducedFound by David W. Cantrell in July 2012.
Circles in a pentagon24s = 7.534+7.534389921−3.90e-04-0.005reproducedFound by David W. Cantrell in July 2012.
Circles in a square2s = 2 + √2 = 3.414+3.414213564−1.37e-09-0.000reproduced
Circles in a square3s = 2 + 1/√2 + √6/2 = 3.931+3.931851654−1.57e-09-0.000reproduced
Circles in a square4s = 44.000000002−1.60e-09-0.000reproduced
Circles in a square5s = 2 + 2√2 = 4.828+4.828427127−1.93e-09-0.000reproduced
Circles in a tan8s = 2 + 3√2 + √6 = 8.692+8.692130433−3.48e-09-0.000reproducedFound by Hans Melissen in 1997.
Circles in a tan9s = 2 + 5√2 = 9.071+9.071067815−3.63e-09-0.000reproduced
Circles in a tan10s = 8 + √2 = 9.414+9.414213566−3.77e-09-0.000reproduced
Circles in a tan11s = 5 + √(2/3) + 3√2 = 10.059+10.059137272−4.02e-09-0.000reproducedFound by David W. Cantrell in June 2005.
Circles in a tan12s = 10.422+10.422815211−8.15e-04-0.008reproducedFound by David W. Cantrell in June 2005.
Circles in a tan13s = 10.798+10.798666393−6.66e-04-0.006reproducedFound by Hans Melissen in 1997.
Circles in a tan14s = 2 + 3√2 + 2√6 = 11.141+11.141620177−4.46e-09-0.000reproducedFound by Erich Friedman in April 2005.
Circles in a tan15s = 10 + √2 = 11.414+11.414213565−3.02e-09-0.000reproduced
Circles in a tan16s = 11.892+11.891982511+1.75e-050.000reproducedFound by David W. Cantrell in January 2006.
Circles in a tan17s = 12.155+12.155914064−9.14e-04-0.008reproducedFound by David W. Cantrell in January 2006.
Circles in a tan18s = 12.542+12.542719624−7.20e-04-0.006reproducedFound by Eckard Specht in April 2009.
Circles in a tan19s = 12.798+12.798666392−6.66e-04-0.005reproducedFound by David W. Cantrell in January 2006.
Circles in a tan20s = 13.092+13.092605393−6.05e-04-0.005reproducedFound by Maurizio Morandi in December 2008.
Circles in a tan21s = 12 + √2 = 13.414+13.414213566−3.72e-09-0.000reproduced
Circles in a triangle2s = 2 + 2√3 = 5.464+5.464101617−2.19e-09-0.000reproduced
Circles in a triangle3s = 2 + 2√3 = 5.464+5.464101617−2.19e-09-0.000reproduced
Circles in a triangle13s = 4 + 2√6/3 + 10√3/3 = 11.406+11.406495858−4.56e-09-0.000reproducedFound by Melissen in 1993.
Circles in a triangle14s = 8 + 2√3 = 11.464+11.464101620−4.59e-09-0.000reproducedFound by Erdős/Oler in 1961.
Circles in an L2s = 44.000000002−1.60e-09-0.000reproduced
Circles in an L3s = 44.000000002−1.60e-09-0.000reproduced
Circles in an L4s = 5.304+5.304812895−8.13e-04-0.015reproducedFound by Erich Friedman in June 2005.
Circles in an L5s = 5.780+5.780892895−8.93e-04-0.015reproducedFound by David W. Cantrell in June 2005.
Circles in an L6s = 6.416+6.416500412−5.00e-04-0.008reproducedFound by David W. Cantrell in June 2005.
Circles in an L7s = 6.787+6.787322146−3.22e-04-0.005reproducedFound by David W. Cantrell in June 2005.
Circles in an L8s = 7.116+7.116251345−2.51e-04-0.004reproducedFound by Erich Friedman in June 2005.
Circles in an L9s = 4 + 12/√13 = 7.328+7.328201180−2.93e-09-0.000reproducedFound by Erich Friedman in June 2005.
Circles in an L10s = 7.628+7.628290963−2.91e-04-0.004reproducedFound by Erich Friedman in June 2005.
Circles in an L11s = 4 + √2 + √6 = 7.863+7.863703308−3.15e-09-0.000reproducedFound by David W. Cantrell in January 2006.
Circles in an L12s = 88.000000003−3.20e-09-0.000reproduced
Circles in an L13s = 8.812+8.812490023−4.90e-04-0.006reproducedFound by David W. Cantrell in January 2006.
Circles in an L14s = 9.085+9.085893323−8.93e-04-0.010reproducedFound by David W. Cantrell in January 2006.
Circles in an L15s = 9.412+9.412649498−6.49e-04-0.007reproducedFound by David W. Cantrell in January 2006.
Circles in an L16s = 9.635+9.635745974−7.46e-04-0.008reproducedFound by David W. Cantrell in January 2006.
Circles in an L17s = 10.00425+10.004253590−3.59e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L18s = 10.27388+10.273885059−5.06e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L19s = 10.46489+10.464896647−6.65e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L20s = 10.61664+10.616645072−5.07e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L21s = 10.82564+10.825649498−9.50e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L22s = 10.89927+10.899275670−5.67e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L23s = 11.21781+11.217812413−2.41e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L24s = 11.41224+11.412241305−1.30e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L25s = 11.71270+11.712699601+3.99e-070.000reproducedFound by Tej Stead in June 2026.
Circles in an L26s = 11.86038+11.860386699−6.70e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L27s = 1212.000000003−3.28e-09-0.000reproduced
Circles in an L28s = 12.49680+12.496806465−6.46e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L29s = 12.67553+12.675529689+3.11e-070.000reproducedFound by Tej Stead in June 2026.
Circles in an L30s = 12.94284+12.942845261−5.26e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L31s = 13.12408+13.124080708−7.08e-07-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L32s = 13.30282+13.302823642−3.64e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L33s = 13.52754+13.527544221−4.22e-06-0.000reproducedFound by Jonathan Viquerat in September 2026.
Circles in an L34s = 13.72415+13.724157861−7.86e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L35s = 13.86770+13.867708776−8.78e-06-0.000reproducedFound by Leo Strijbos in August 2026.
Circles in an L36s = 14.01152+14.011527575−7.58e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L37s = 14.10954+14.109546337−6.34e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L38s = 14.23736+14.237364434−4.43e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L39s = 14.30561+14.305616537−6.54e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L40s = 14.54974+14.549742882−2.88e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L41s = 14.69163+14.691635123−5.12e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L42s = 14.90788+14.907881852−1.85e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L43s = 15.06571+15.065713308−3.31e-06-0.000reproducedFound by Tej Stead in June 2026.
Circles in an L44s = 15.27022+15.270195484+2.45e-050.000beatenFound by Tej Stead in June 2026.
Circles in an L45s = 15.43636+15.431836747+4.52e-030.029beatenFound by Tej Stead in June 2026.
Circles in an L46s = 15.71083+15.709648886+1.18e-030.008beatenFound by Jonathan Viquerat in September 2026.
Circles in an L47s = 15.85935+15.859349870+1.30e-070.000reproducedFound by Jonathan Viquerat in September 2026.
Circles in an L48s = 15.98311+15.983106863+3.14e-060.000reproducedFound by Tej Stead in June 2026.
Circles in an L49s = 16.13179+16.131792995−3.00e-06-0.000reproducedFound by Leo Strijbos in August 2026.
Circles in an L50s = 16.30078+16.300776166+3.83e-060.000reproducedFound by Jonathan Viquerat in September 2026.
Dominoes in a circle2r = √2 = 1.41421+1.414213572−9.53e-09-0.000reproduced
Dominoes in a circle3r = √13/2 = 1.80277+1.802775664−2.59e-08-0.000reproduced
Dominoes in a circle4r = 1.97949+1.979495622−5.62e-06-0.000reproducedFound by Jonathan Viquerat in May 2026
Dominoes in a circle5r = 2.18039+2.180565951−1.76e-04-0.008behindFound by Jonathan Viquerat in May 2026.
Dominoes in a circle6r = √5 = 2.23606+2.355851455−1.20e-01-5.357behind
Dominoes in a circle7r = 2.51459+2.515370505−7.81e-04-0.031behindFound by Jonathan Viquerat in May 2026.
Dominoes in a circle8r = 2.65851+2.771078931−1.13e-01-4.234behindFound by Jonathan Viquerat in May 2026.
Dominoes in a circle9r = 2.76860+2.786397797−1.78e-02-0.643behindFound by Jonathan Viquerat in May 2026.
Dominoes in a circle10r = 2.93560+2.968276694−3.27e-02-1.113behindFound by Jonathan Viquerat in August 2026.
Dominoes in a circle11r = 3.08701+3.261265256−1.74e-01-5.645behindFound by Jonathan Viquerat in August 2026.
Dominoes in a circle12r = √10 = 3.16227+3.354102043−1.92e-01-6.066behindFound by Maurizio Morandi in May 2026.
Dominoes in a circle13r = 3.27852+3.411424403−1.33e-01-4.054behindFound by Jonathan Viquerat in May 2026.
Dominoes in a circle14r = 3.37689+3.629240510−2.52e-01-7.473behindFound by Jonathan Viquerat in May 2026.
Dominoes in a circle15r = 3.48515+3.649879165−1.65e-01-4.727behindFound by Jonathan Viquerat in May 2026.
Dominoes in a circle16r = √13 = 3.60555+3.786572973−1.81e-01-5.021behindFound by Jonathan Viquerat in May 2026.
Dominoes in a circle17r = √53/2 = 3.64005+3.750656366−1.11e-01-3.038behindFound by Maurizio Morandi in May 2026.
Dominoes in a circle18r = 3.78121+4.132510889−3.51e-01-9.291behindFound by Jonathan Viquerat in May 2026.
Dominoes in a circle19r = 3.85867+4.217066296−3.58e-01-9.288behindFound by Jonathan Viquerat in August 2026.
Dominoes in a circle20r = 3.99407+4.189908554−1.96e-01-4.903behindFound by Jonathan Viquerat in May 2026.
Dominoes in a circle21r = 4.09448+4.383777682−2.89e-01-7.066behindFound by Jonathan Viquerat in August 2026.
Dominoes in a circle22r = 4.17546+4.445780882−2.70e-01-6.474behindFound by Jonathan Viquerat in August 2026.
Dominoes in a circle23r = 4.25369+4.517920953−2.64e-01-6.212behindFound by Jonathan Viquerat in May 2026.
Dominoes in a circle24r = 4.27200+4.605259437−3.33e-01-7.801behindFound by Jonathan Viquerat in August 2026.
Dominoes in a circle25r = 4.40723+4.712585593−3.05e-01-6.929behindFound by Jonathan Viquerat in August 2026.
Dominoes in a domino2s = (2+√2)/√3 = 1.971+1.971197120−8.55e-10-0.000reproducedFound by Erich Friedman in April 2026.
Dominoes in a domino3s = 22.000000001−8.00e-10-0.000reproduced
Dominoes in a domino4s = 22.000000001−8.00e-10-0.000reproduced
Dominoes in a domino5s = 5/2 = 2.52.500000038−3.77e-08-0.000reproduced
Dominoes in a domino6s = 2.916+3.000000056−8.40e-02-2.881behindFound by Erich Friedman in April 2026.
Dominoes in a domino7s = 33.000000051−5.09e-08-0.000reproduced
Dominoes in a domino8s = 33.000000058−5.83e-08-0.000reproduced
Dominoes in a domino9s = 33.000000056−5.58e-08-0.000reproduced
Dominoes in a domino10s = 7/2 = 3.53.500399378−3.99e-04-0.011reproduced
Dominoes in a domino11s = (5+√41)/3 = 3.801+4.000000084−1.99e-01-5.234behindFound by Maurizio Morandi in April 2026.
Dominoes in a domino12s = 5/2+√2 = 3.914+4.000000080−8.58e-02-2.192behindFound by Maurizio Morandi in April 2026.
Dominoes in a domino13s = 44.000000002−1.60e-09-0.000reproducedInherited published construction at n=14; not a newly discovered record
Dominoes in a domino14s = 44.000000002−1.60e-09-0.000reproduced
Dominoes in a domino15s = 44.000000076−7.64e-08-0.000reproduced
Dominoes in a domino16s = 44.000000076−7.56e-08-0.000reproduced
Dominoes in a domino17s = 9/2 = 4.54.504410611−4.41e-03-0.098reproduced
Dominoes in a domino18s = 9/2 = 4.54.550237521−5.02e-02-1.116reproduced
Dominoes in a domino19s = 3(5+√2)/4 = 4.81066+5.006748390−1.96e-01-4.076behindFound by Maurizio Morandi in June 2026.
Dominoes in a domino20s = 4.95714+5.000028388−4.29e-02-0.865behindFound by Maurizio Morandi in June 2026.
Dominoes in a domino21s = 55.000034280−3.43e-05-0.001behind
Dominoes in a domino22s = 55.000332101−3.32e-04-0.007behind
Dominoes in a domino23s = 55.001294930−1.29e-03-0.026behind
Dominoes in a domino24s = 55.002345650−2.35e-03-0.047behind
Dominoes in a domino25s = 55.386125347−3.86e-01-7.723behind
Dominoes in a hexagon2s = 2/3^(1/4) = 1.51967+1.519671385−1.37e-08-0.000reproducedFound by Jonathan Viquerat in May 2026.
Dominoes in a hexagon3s = √2(3)^(1/4) = 1.86120+1.861209750−3.19e-08-0.000reproducedFound by Jonathan Viquerat in May 2026.
Dominoes in a hexagon4s = 1+2/√3 = 2.15470+2.154700584−4.58e-08-0.000reproducedFound by Jonathan Viquerat in May 2026.
Dominoes in a hexagon5s = 4/√3 = 2.30940+2.309401130−5.35e-08-0.000reproduced
Dominoes in a hexagon6s = 1+5√3/6 = 2.44337+2.484192219−4.08e-02-1.671behindFound by Jonathan Viquerat in May 2026.
Dominoes in a hexagon7s = 2.63126+2.728312746−9.71e-02-3.688behindFound by Aapo Lipponen in July 2026.
Dominoes in a hexagon8s = 2.85220+2.925149823−7.29e-02-2.558behindFound by Jonathan Viquerat in May 2026.
Dominoes in a hexagon9s = 2.93631+3.008565343−7.23e-02-2.461behindFound by Jonathan Viquerat in May 2026.
Dominoes in a hexagon10s = 3.20593+3.256366576−5.04e-02-1.573behindFound by Aapo Lipponen in July 2026.
Dominoes in a hexagon11s = 3.33391+3.464101684−1.30e-01-3.905behindFound by Luke Kaiser in September 2026.
Dominoes in a hexagon12s = 3.44304+3.601273566−1.58e-01-4.596behindFound by Luke Kaiser in September 2026.
Dominoes in a hexagon13s = 3.52702+3.670637486−1.44e-01-4.072behindFound by Jonathan Viquerat in May 2026.
Dominoes in a hexagon14s = 3.65080+3.729108393−7.83e-02-2.145behindFound by Luke Kaiser in September 2026.
Dominoes in a hexagon15s = 2(12)^(1/4) = 3.72241+3.839768564−1.17e-01-3.153behindFound by Maurizio Morandi in July 2026.
Dominoes in a hexagon16s = 3.87030+4.136723692−2.66e-01-6.884behindFound by Luke Kaiser in September 2026.
Dominoes in a hexagon17s = 4.00242+4.457212454−4.55e-01-11.363behindFound by Luke Kaiser in September 2026.
Dominoes in a hexagon18s = 2+7√3/6 = 4.02072+4.491089836−4.70e-01-11.698behindFound by Maurizio Morandi in July 2026.
Dominoes in a hexagon19s = 4.19677+4.628932373−4.32e-01-10.297behindFound by Jonathan Viquerat in May 2026.
Dominoes in a hexagon20s = 4.35104+4.628167247−2.77e-01-6.369behindFound by Luke Kaiser in September 2026.
Dominoes in a hexagon21s = 4.43949+4.634177126−1.95e-01-4.385behindFound by Luke Kaiser in September 2026.
Dominoes in a hexagon22s = 4.54229+4.768194748−2.26e-01-4.973behindFound by Luke Kaiser in September 2026.
Dominoes in a hexagon23s = 2+3√3/2 = 4.59807+4.831566310−2.33e-01-5.078behindFound by Maurizio Morandi in July 2026.
Dominoes in a hexagon24s = 2+3√3/2 = 4.59807+4.698458445−1.00e-01-2.183behindFound by Maurizio Morandi in July 2026.
Dominoes in a hexagon25s = 3+√3 = 4.73205+4.851100258−1.19e-01-2.516behindFound by Maurizio Morandi in July 2026.
Dominoes in a hexagon26s = 4+√3/2 = 4.86602+5.088196055−2.22e-01-4.566behindFound by Maurizio Morandi in July 2026.
Dominoes in a hexagon27s = 4.95289+5.334327147−3.81e-01-7.701behindFound by Jonathan Viquerat in September 2026.
Dominoes in a hexagon28s = 5.07598+5.381169643−3.05e-01-6.012behindFound by Luke Kaiser in September 2026.
Dominoes in a hexagon29s = 2+11√3/6 = 5.17542+5.538719287−3.63e-01-7.020behindFound by Maurizio Morandi in July 2026.
Dominoes in a hexagon30s = 2+11√3/6 = 5.17542+5.425542479−2.50e-01-4.833behindFound by Maurizio Morandi in July 2026.
Dominoes in a pentagon2s = 1.86166+1.861668577−8.58e-06-0.000reproducedFound by Aapo Lipponen in July 2026.
Dominoes in a pentagon3s = 2.31933+2.319335606−5.61e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Dominoes in a pentagon4s = 2.58859+2.588595825−5.83e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Dominoes in a pentagon5s = 2.80725+2.807256341−6.34e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Dominoes in a pentagon6s = 2.98883+2.988831868−1.87e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Dominoes in a pentagon7s = 3.24589+3.348544121−1.03e-01-3.163behindFound by Jonathan Viquerat in May 2026.
Dominoes in a pentagon8s = 3.49269+3.625397741−1.33e-01-3.800behindFound by Jonathan Viquerat in May 2026.
Dominoes in a pentagon9s = 3.65963+3.724506393−6.49e-02-1.773behindFound by Jonathan Viquerat in May 2026.
Dominoes in a pentagon10s = 3.82264+4.012541325−1.90e-01-4.968behindFound by Jonathan Viquerat in May 2026.
Dominoes in a pentagon11s = 3.94761+4.235426770−2.88e-01-7.291behindFound by Jonathan Viquerat in May 2026.
Dominoes in a pentagon12s = 4.13414+4.420234203−2.86e-01-6.920behindFound by Jonathan Viquerat in August 2026.
Dominoes in a pentagon13s = 4.26767+4.380532304−1.13e-01-2.645behindFound by Jonathan Viquerat in May 2026.
Dominoes in a pentagon14s = 4.50050+4.589929776−8.94e-02-1.987behindFound by Jonathan Viquerat in May 2026.
Dominoes in a pentagon15s = 4.59464+4.938689230−3.44e-01-7.488behindFound by Jonathan Viquerat in August 2026.
Dominoes in a pentagon16s = 4.73238+4.865180017−1.33e-01-2.806behindFound by Luke Kaiser in September 2026.
Dominoes in a pentagon17s = 4.84579+5.404585024−5.59e-01-11.532behindFound by Jonathan Viquerat in August 2026.
Dominoes in a pentagon18s = 4+√((5+√5)/8) = 4.95105+5.417264114−4.66e-01-9.416behindFound by Maurizio Morandi in August 2026.
Dominoes in a pentagon19s = 5.16530+5.610794929−4.45e-01-8.625behindFound by Luke Kaiser in September 2026.
Dominoes in a pentagon20s = 5.26425+5.682735273−4.18e-01-7.950behindFound by Jonathan Viquerat in August 2026.
Dominoes in a pentagon21s = 5.40180+5.772848849−3.71e-01-6.869behindFound by Jonathan Viquerat in August 2026.
Dominoes in a pentagon22s = 5.53463+5.658094139−1.23e-01-2.231behindFound by Luke Kaiser in September 2026.
Dominoes in a pentagon23s = 5.63467+5.899713376−2.65e-01-4.704behindFound by Luke Kaiser in September 2026.
Dominoes in a pentagon24s = 5.70796+5.883083232−1.75e-01-3.068behindFound by Jonathan Viquerat in August 2026.
Dominoes in a pentagon25s = 5.84981+5.991777780−1.42e-01-2.427behindFound by Jonathan Viquerat in August 2026.
Dominoes in a pentagon26s = 5.94561+6.425751084−4.80e-01-8.076behindFound by Jonathan Viquerat in August 2026.
Dominoes in a pentagon27s = 6.03477+6.279659485−2.45e-01-4.058behindFound by Jonathan Viquerat in August 2026.
Dominoes in a pentagon28s = 6.19946+6.458944272−2.59e-01-4.186behindFound by Jonathan Viquerat in August 2026.
Dominoes in a pentagon29s = 6.27249+6.748334999−4.76e-01-7.586behindFound by Jonathan Viquerat in August 2026.
Dominoes in a pentagon30s = 6.36194+6.811864942−4.50e-01-7.072behindFound by Jonathan Viquerat in August 2026.
Dominoes in a square2s = 22.000000001−8.00e-10-0.000reproduced
Dominoes in a square4s = 33.000000001−1.20e-09-0.000reproduced
Dominoes in a square6s = 44.000000002−1.60e-09-0.000reproduced
Dominoes in a square7s = 44.000000020−1.98e-08-0.000reproduced
Dominoes in a square8s = 44.000000076−7.56e-08-0.000reproduced
Dominoes in a square9s = 4.86784+4.939418233−7.16e-02-1.470behindFound by Aapo Lipponen in July 2026.
Dominoes in a square10s = 55.002532217−2.53e-03-0.051behind
Dominoes in a square11s = 55.000013050−1.31e-05-0.000behind
Dominoes in a square12s = 56.000041841−1.0000-20.001behind
Dominoes in a square13s = 5+1/√2 = 5.70710+6.000000124−2.93e-01-5.132behindFound by Jonathan Viquerat in May 2026.
Dominoes in a square14s = 3+2√2 = 5.82842+6.000026094−1.72e-01-2.944behindFound by Maurizio Morandi in June 2026.
Dominoes in a square15s = 66.000011444−1.14e-05-0.000behind
Dominoes in a square16s = 66.000413722−4.14e-04-0.007behind
Dominoes in a square17s = 66.015695797−1.57e-02-0.262behind
Dominoes in a square18s = 66.000039003−3.90e-05-0.001behind
Dominoes in a square19s = 47/7 = 6.71428+7.005509629−2.91e-01-4.337behindFound by Maurizio Morandi in June 2026.
Dominoes in a square20s = 11/2+√2 = 6.91421+7.001648960−8.74e-02-1.265behindFound by Maurizio Morandi in August 2026.
Dominoes in a square21s = 77.023071376−2.31e-02-0.330behind
Dominoes in a square22s = 78.002727369−1.0027-14.325behind
Dominoes in a square23s = 78.012743313−1.0127-14.468behind
Dominoes in a square24s = 78.016026579−1.0160-14.515behind
Dominoes in a square25s = 7+1/√2 = 7.70710+8.005276147−2.98e-01-3.869behindFound by Maurizio Morandi in August 2026.
Dominoes in a square26s = 5+2√2 = 7.82842+8.003907263−1.75e-01-2.242behindFound by Maurizio Morandi in August 2026.
Dominoes in a square27s = 88.013833447−1.38e-02-0.173behind
Dominoes in a square28s = 88.007879951−7.88e-03-0.098behind
Dominoes in a square29s = 88.000782244−7.82e-04-0.010behind
Dominoes in a square30s = 88.033610843−3.36e-02-0.420behind
Dominoes in a square31s = 88.020187413−2.02e-02-0.252behind
Dominoes in a square32s = 88.075638221−7.56e-02-0.945behind
Dominoes in a tan2s = 1+2√2 = 3.82842+3.828427141−1.61e-08-0.000reproduced
Dominoes in a tan3s = 3√2 = 4.24264+4.242640689−1.70e-09-0.000reproduced
Dominoes in a tan4s = 2+2√2 = 4.82842+4.949747487−1.21e-01-2.513behindFound by Erich Friedman in May 2026
Dominoes in a tan5s = 1+3√2 = 5.24264+5.242640722−3.44e-08-0.000reproducedFound by Erich Friedman in May 2026.
Dominoes in a tan6s = 4√2 = 5.65685+5.828427237−1.72e-01-3.033behind
Dominoes in a tan7s = 2+3√2 = 6.24264+6.242640808−1.21e-07-0.000reproducedFound by Jonathan Viquerat in May 2026.
Dominoes in a tan8s = 5+√2 = 6.41421+6.618741797−2.05e-01-3.189behindFound by Erich Friedman in May 2026.
Dominoes in a tan9s = 4+2√2 = 6.82842+7.007474369−1.79e-01-2.622behindFound by Erich Friedman in May 2026.
Dominoes in a tan10s = 5√2 = 7.07106+7.414213710−3.43e-01-4.853behind
Dominoes in a tan11s = 6+√2 = 7.41421+7.538142665−1.24e-01-1.672behindFound by Jonathan Viquerat in May 2026.
Dominoes in a tan12s = 5+2√2 = 7.82842+7.829498746−1.07e-03-0.014behindFound by Jonathan Viquerat in May 2026.
Dominoes in a tan13s = 88.333590058−3.34e-01-4.170behindFound by Erich Friedman in May 2026.
Dominoes in a tan14s = 4+3√2 = 8.24264+9.088750096−8.46e-01-10.265behindFound by Maurizio Morandi in May 2026.
Dominoes in a tan15s = 6√2 = 8.48528+9.078887519−5.94e-01-6.996behind
Dominoes in a tan16s = 6+2√2 = 8.82842+8.830299434−1.87e-03-0.021behindFound by Erich Friedman in May 2026.
Dominoes in a tan17s = 910.163959327−1.1640-12.933behindFound by Maurizio Morandi in May 2026.
Dominoes in a tan18s = 5+3√2 = 9.24264+10.090449130−8.48e-01-9.173behindFound by Maurizio Morandi in May 2026.
Dominoes in a tan19s = 1+6√2 = 9.48528+10.266843558−7.82e-01-8.240behindFound by Maurizio Morandi in May 2026.
Dominoes in a tan20s = 7+2√2 = 9.82842+10.366945735−5.39e-01-5.479behindFound by Jonathan Viquerat in May 2026.
Dominoes in a triangle2s = 2+4/√3 = 4.30940+4.309401078−1.72e-09-0.000reproduced
Dominoes in a triangle3s = 2+4/√3 = 4.30940+4.309401078−1.72e-09-0.000reproduced
Dominoes in a triangle4s = 5.38188+5.381887117−7.12e-06-0.000reproducedFound by Jonathan Viquerat in April 2026.
Dominoes in a triangle5s = 2+2√3 = 5.46410+5.464101686−7.06e-08-0.000reproducedFound by Jonathan Viquerat in April 2026.
Dominoes in a triangle6s = 4+4/√3 = 6.30940+6.593261133−2.84e-01-4.499behindFound by Jonathan Viquerat in April 2026.
Dominoes in a triangle7s = 6.61394+6.618830469−4.89e-03-0.074behindFound by Aapo Lipponen in July 2026.
Dominoes in a triangle8s = 6+2/√3 = 7.15470+7.154700687−1.49e-07-0.000reproducedFound by Jonathan Viquerat in April 2026.
Dominoes in a triangle9s = 5+4/√3 = 7.30940+7.466282999−1.57e-01-2.146behindFound by Jonathan Viquerat in April 2026.
Dominoes in a triangle10s = 3+8/√3 = 7.61880+7.625035401−6.23e-03-0.082behindFound by Bhavithran Ananthan in July 2026.
Dominoes in a triangle11s = 7+2/√3 = 8.15470+8.679517618−5.25e-01-6.436behindFound by Jonathan Viquerat in April 2026.
Dominoes in a triangle12s = 6+4/√3 = 8.30940+8.619012732−3.10e-01-3.726behindFound by Jonathan Viquerat in April 2026.
Dominoes in a triangle13s = 4+8/√3 = 8.61880+9.487565296−8.69e-01-10.080behindFound by Bhavithran Ananthan in July 2026.
Dominoes in a triangle14s = 3+10/√3 = 8.77350+9.961718046−1.1882-13.543behindFound by Maurizio Morandi in April 2026.
Dominoes in a triangle15s = 7+4/√3 = 9.30940+9.871832021−5.62e-01-6.042behindFound by Jonathan Viquerat in April 2026.
Dominoes in a triangle16s = 6+2√3 = 9.46410+10.344730559−8.81e-01-9.305behindFound by Maurizio Morandi in April 2026.
Dominoes in a triangle17s = 4+10/√3 = 9.77350+11.195183463−1.4217-14.546behindFound by Jonathan Viquerat in April 2026.
Dominoes in a triangle18s = 3+4√3 = 9.92820+10.966075871−1.0379-10.454behindFound by Jonathan Viquerat in April 2026.
Dominoes in a triangle19s = 8+4/√3 = 10.30940+10.625339912−3.16e-01-3.065behindFound by Jonathan Viquerat in April 2026.
Dominoes in a triangle20s = 7+2√3 = 10.46410+11.417483716−9.53e-01-9.111behindFound by Maurizio Morandi in April 2026.
Dominoes in a triangle21s = 2+5√3 = 10.66025+11.313705159−6.53e-01-6.130behindFound by Maurizio Morandi in April 2026.
Dominoes in a triangle22s = 4(1+√3) = 10.92820+12.001026659−1.0728-9.817behindFound by Maurizio Morandi in April 2026.
Dominoes in a triangle23s = 10+2/√3 = 11.15470+11.779578399−6.25e-01-5.602behindFound by Maurizio Morandi in April 2026.
Dominoes in a triangle24s = 9+4/√3 = 11.30940+12.092425330−7.83e-01-6.924behindFound by Maurizio Morandi in April 2026.
Dominoes in a triangle25s = 7+8/√3 = 11.61880+12.545206751−9.26e-01-7.973behindFound by Maurizio Morandi in June 2026.
Dominoes in a triangle26s = 11.79418+12.949747813−1.1556-9.798behindFound by Aapo Lipponen in July 2026.
Dominoes in a triangle27s = 4+14/√3 = 12.08290+12.822649464−7.40e-01-6.122behindFound by Maurizio Morandi in June 2026.
Dominoes in an L2s = 3/2 = 1.51.500000013−1.31e-08-0.000reproduced
Dominoes in an L3s = (6+√2)/4 = 1.853+1.853553424−3.36e-08-0.000reproducedFound by Erich Friedman in April 2026.
Dominoes in an L4s = 22.000000001−8.01e-10-0.000reproduced
Dominoes in an L5s = 22.000000004−3.62e-09-0.000reproduced
Dominoes in an L6s = 22.000000001−1.13e-09-0.000reproduced
Dominoes in an L7s = 5/2 = 2.52.502125189−2.13e-03-0.085reproduced
Dominoes in an L8s = 5/2 = 2.53.000000036−5.00e-01-20.000behind
Dominoes in an L9s = 2.87746+2.958618060−8.12e-02-2.820behindFound by Jonathan Viquerat in June 2026.
Dominoes in an L10s = 33.013860710−1.39e-02-0.462behind
Dominoes in an L11s = 33.016500442−1.65e-02-0.550behind
Dominoes in an L12s = 33.091753832−9.18e-02-3.058behind
Dominoes in an L13s = 33.511413699−5.11e-01-17.047behind
Dominoes in an L14s = 3+√2/4 = 3.353+3.812847627−4.59e-01-13.698behindFound by Maurizio Morandi in April 2026.
Dominoes in an L15s = 7/2 = 3.53.501290032−1.29e-03-0.037reproduced
Dominoes in an L16s = 7/2 = 3.54.000025678−5.00e-01-14.286behind
Dominoes in an L17s = (10+9√2)/6 = 3.787+4.002294351−2.14e-01-5.659behindFound by Maurizio Morandi in April 2026.
Dominoes in an L18s = (11+6√2)/5 = 3.897+4.005614362−1.09e-01-2.786behindFound by Maurizio Morandi in April 2026.
Dominoes in an L19s = 44.004432984−4.43e-03-0.111behind
Dominoes in an L20s = 44.000443622−4.44e-04-0.011behind
Dominoes in an L21s = 44.020826630−2.08e-02-0.521behind
Dominoes in an L22s = 44.001824505−1.82e-03-0.046behind
Dominoes in an L23s = 44.002847603−2.85e-03-0.071behind
Dominoes in an L24s = 44.002843305−2.84e-03-0.071behind
Dominoes in an octagon2s = √(4–2√2) = 1.08239+1.082392210−9.97e-09-0.000reproduced
Dominoes in an octagon3s = √(5–√2–√(8√2–9)) = 1.43690+1.436905902−2.33e-08-0.000reproducedFound by Maurizio Morandi in May 2026.
Dominoes in an octagon4s = 1.57337+1.573372066−2.07e-06-0.000reproducedFound by Maurizio Morandi in May 2026.
Dominoes in an octagon5s = 1.71644+1.720930933−4.49e-03-0.262behindFound by Jonathan Viquerat in June 2026.
Dominoes in an octagon6s = √(6–√2–√(20√2–26)) = 1.75339+1.754465126−1.07e-03-0.061behindFound by Maurizio Morandi in May 2026.
Dominoes in an octagon7s = 2.00516+2.071067848−6.59e-02-3.287behindFound by Jonathan Viquerat in June 2026.
Dominoes in an octagon8s = 5(√2–1) = 2.07106+2.071067868−5.59e-08-0.000reproduced
Dominoes in an octagon9s = 2.19803+2.287462606−8.94e-02-4.069behindFound by Jonathan Viquerat in June 2026.
Dominoes in an octagon10s = 2.32394+2.508903512−1.85e-01-7.959behindFound by Jonathan Viquerat in June 2026.
Dominoes in an octagon11s = 2.44911+2.490798930−4.17e-02-1.702behindFound by Jonathan Viquerat in June 2026.
Dominoes in an octagon12s = 6(√2–1) = 2.48528+2.528319420−4.30e-02-1.732behind
Dominoes in an octagon13s = 2.56556+2.705658792−1.40e-01-5.461behindFound by Jonathan Viquerat in June 2026.
Dominoes in an octagon14s = 2.67740+2.865703294−1.88e-01-7.033behindFound by Jonathan Viquerat in June 2026.
Dominoes in an octagon15s = 2.80446+2.912641803−1.08e-01-3.857behindFound by Jonathan Viquerat in June 2026.
Dominoes in an octagon16s = 2√(5–√2–√(8√2–9)) = 2.87381+3.098160357−2.24e-01-7.807behindFound by Maurizio Morandi in June 2026.
Dominoes in an octagon17s = 2.92223+3.164660764−2.42e-01-8.296behindFound by Aapo Lipponen in July 2026.
Dominoes in an octagon18s = 9–17√2/4 = 2.98959+3.234555339−2.45e-01-8.194behindFound by Maurizio Morandi in August 2026.
Dominoes in an octagon19s = 3.08791+3.193679353−1.06e-01-3.425behindFound by Jonathan Viquerat in June 2026.
Dominoes in an octagon20s = 3.16881+3.318460076−1.50e-01-4.723behindFound by Jonathan Viquerat in June 2026.
Dominoes in an octagon21s = 8(√2–1) = 3.31370+3.455489292−1.42e-01-4.279behindFound by Maurizio Morandi in July 2026.
Dominoes in an octagon22s = 8(√2–1) = 3.31370+3.468370526−1.55e-01-4.667behindFound by Maurizio Morandi in July 2026.
Dominoes in an octagon23s = (26–9√2)/4 = 3.31801+3.547791491−2.30e-01-6.925behindFound by Maurizio Morandi in July 2026.
Dominoes in an octagon24s = 4(13–5√2)/7 = 3.38796+3.588257025−2.00e-01-5.912behindFound by Maurizio Morandi in July 2026.
Dominoes in an octagon25s = 2√(6–√2–√(20√2–26)) = 3.50679+3.726295144−2.19e-01-6.259behindFound by Maurizio Morandi in July 2026.
Dominoes in an octagon26s = 2√(6–√2–√(20√2–26)) = 3.50679+3.728578015−2.22e-01-6.324behindFound by Maurizio Morandi in July 2026.
Dominoes in an octagon27s = 10–9/√2 = 3.63603+3.864332291−2.28e-01-6.279behindFound by Maurizio Morandi in July 2026.
Dominoes in an octagon28s = 9(√2–1) = 3.72792+3.808998788−8.11e-02-2.175behindFound by Maurizio Morandi in July 2026.
Dominoes in an octagon29s = 22(3–2√2) = 3.77460+3.849043411−7.44e-02-1.972behindFound by Maurizio Morandi in July 2026.
Dominoes in an octagon30s = (42–19√2)/4 = 3.78248+3.955288859−1.73e-01-4.569behindFound by Maurizio Morandi in July 2026.
Dominoes in an octagon31s = 3.80663+4.088598547−2.82e-01-7.407behindFound by Aapo Lipponen in July 2026.
Hexagons in a circle2r = √13/2 = 1.802+1.802775649−1.10e-08-0.000reproduced
Hexagons in a circle3r = 22.000000032−3.17e-08-0.000reproduced
Hexagons in a circle4r = (21–√145)/4 = 2.239+2.239601380−2.47e-08-0.000reproducedFound by Maurizio Morandi in March 2026.
Hexagons in a circle5r = 2.471+2.474128397−3.13e-03-0.127behindFound by Maurizio Morandi in March 2026.
Hexagons in a circle6r = √7 = 2.645+2.645751339−2.84e-08-0.000reproduced
Hexagons in a circle7r = √7 = 2.645+2.645751349−3.83e-08-0.000reproduced
Hexagons in a circle8r = 2.984+2.984724774−7.25e-04-0.024reproducedFound by Maurizio Morandi in March 2026.
Hexagons in a circle9r = 3.301+3.305379380−4.38e-03-0.133behindFound by Maurizio Morandi in March 2026.
Hexagons in a circle10r = 3.48172+3.483073709−1.35e-03-0.039behindFound by Jake Loyd in June 2026.
Hexagons in a circle11r = 3.59003+3.597900765−7.87e-03-0.219behindFound by Jake Loyd in June 2026.
Hexagons in a circle12r = √13 = 3.605+3.605896383−3.45e-04-0.010reproducedFound by Maurizio Morandi in March 2026.
Hexagons in a circle13r = 3.82289+3.860633247−3.77e-02-0.987behindFound by Jake Loyd in June 2026.
Hexagons in a circle14r = 3.87755+3.885382759−7.83e-03-0.202behindFound by Jake Loyd in June 2026.
Hexagons in a circle15r = 4.08154+4.121615704−4.01e-02-0.982behindFound by Jake Loyd in June 2026.
Hexagons in a circle16r = 4.13960+4.262161965−1.23e-01-2.961behindFound by Jake Loyd in June 2026.
Hexagons in a circle17r = 4.30158+4.350686807−4.91e-02-1.142behindFound by Jake Loyd in June 2026.
Hexagons in a circle18r = √19 = 4.35889+4.365336597−6.44e-03-0.148behind
Hexagons in a circle19r = √19 = 4.35889+4.359924373−1.03e-03-0.024behind
Hexagons in a circle20r = 4.62527+4.846202759−2.21e-01-4.777behindFound by Jake Loyd in June 2026.
Hexagons in a circle21r = 4.68305+4.685197727−2.15e-03-0.046behindFound by Jake Loyd in June 2026.
Hexagons in a circle22r = 4.89204+4.934687569−4.26e-02-0.872behindFound by Jake Loyd in June 2026.
Hexagons in a circle23r = 4.98608+4.988883042−2.80e-03-0.056behindFound by Jake Loyd in June 2026.
Hexagons in a circle24r = 5.08387+5.194122124−1.10e-01-2.169behindFound by Jake Loyd in June 2026.
Hexagons in a circle25r = 5.18804+5.220865891−3.28e-02-0.633behindFound by Haowei Lin in June 2026.
Hexagons in a circle26r = 5.25746+5.299591377−4.21e-02-0.801behindFound by Haowei Lin in June 2026.
Hexagons in a circle27r = 5.28167+5.326570627−4.49e-02-0.850behindFound by Haowei Lin in June 2026.
Hexagons in a domino2s = 1.8946+1.894691516−9.15e-05-0.005reproducedFound by Jonathan Viquerat in April 2026.
Hexagons in a domino3s = 6–2√3 = 2.53589+2.535898400−1.55e-08-0.000reproducedFound by Jonathan Viquerat in April 2026.
Hexagons in a domino4s = 22–11√3 = 2.94744+2.947441134−1.75e-08-0.000reproducedFound by Jonathan Viquerat in April 2026.
Hexagons in a domino5s = 7(2√3–3) = 3.24871+3.248710331+9.75e-070.000beatenFound by Jonathan Viquerat in April 2026.
Hexagons in a domino6s = 21(15–2√3)/71 = 3.41202+3.418866590−6.84e-03-0.200behindFound by Jonathan Viquerat in April 2026.
Hexagons in a domino7s = 3.48722+3.488558354−1.34e-03-0.038behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a domino8s = 3.6906+3.690675039−7.50e-05-0.002reproducedFound by Jonathan Viquerat in April 2026.
Hexagons in a domino9s = (36+5√3)/11 = 4.06002+4.060023165−7.09e-08-0.000reproducedFound by Jonathan Viquerat in April 2026.
Hexagons in a domino10s = 9(2√3–3) = 4.17691+4.177928279−1.01e-03-0.024behindFound by Jonathan Viquerat in April 2026.
Hexagons in a domino11s = 4.5036+4.556392537−5.28e-02-1.172behindFound by Jonathan Viquerat in April 2026.
Hexagons in a domino12s = 41(18–5√3)/83 = 4.6136+4.614300600−6.91e-04-0.015behindFound by Jonathan Viquerat in April 2026.
Hexagons in a domino13s = 4.8137+4.850100141−3.64e-02-0.756behindFound by Jonathan Viquerat in April 2026.
Hexagons in a domino14s = 25(6–√3)/22 = 4.84994+4.850457896−5.16e-04-0.011behindFound by Jonathan Viquerat in April 2026.
Hexagons in a domino15s = 56(27–4√3)/227 = 4.95163+5.010455293−5.88e-02-1.188behindFound by Jonathan Viquerat in April 2026.
Hexagons in a domino16s = 3√3 = 5.19615+5.207258177−1.11e-02-0.214behind
Hexagons in a domino17s = 3√3 = 5.19615+5.630296993−4.34e-01-8.355behind
Hexagons in a domino18s = 31(4–√3)/13 = 5.40818+5.409339221−1.15e-03-0.021behindFound by Jonathan Viquerat in April 2026.
Hexagons in a domino19s = 5.65222+5.922971913−2.71e-01-4.790behindFound by Jonathan Viquerat in September 2026.
Hexagons in a domino20s = 5.8012+5.804448714−3.25e-03-0.056behindFound by Jonathan Viquerat in April 2026.
Hexagons in a domino21s = 5.85640+6.077039658−2.21e-01-3.767behindFound by Thomas Greenleaf in June 2026.
Hexagons in a domino22s = 6.06943+6.254917655−1.85e-01-3.056behindFound by Jonathan Viquerat in September 2026.
Hexagons in a domino23s = 6.25797+6.190597806+6.74e-021.077beatenFound by Jonathan Viquerat in September 2026.
Hexagons in a hexagon2s = 22.000000001−8.00e-10-0.000reproduced
Hexagons in a hexagon3s = 22.000000001−8.00e-10-0.000reproduced
Hexagons in a hexagon4s = 7/3 = 2.333+2.333333334−9.33e-10-0.000reproduced
Hexagons in a hexagon5s = 8/3 = 2.666+2.666666677−1.05e-08-0.000reproducedFound by Erich Friedman in March 2015.
Hexagons in a hexagon6s = 5/√3 = 2.886+2.896311904−9.56e-03-0.331behindFound by Maurizio Morandi in April 2015.
Hexagons in a hexagon7s = 5/√3 = 2.886+2.886753673−2.33e-06-0.000reproducedFound by Maurizio Morandi in April 2015.
Hexagons in a hexagon8s = (51+5√3)/18 = 3.314+3.314458618−6.03e-08-0.000reproducedFound by Maurizio Morandi in April 2015.
Hexagons in a hexagon9s = (24+5√3)/9 = 3.628+3.628917182−6.66e-08-0.000reproducedFound by Maurizio Morandi in April 2015.
Hexagons in a hexagon10s = 2 + √3 = 3.732+3.732051689−8.81e-07-0.000reproducedFound by Maurizio Morandi in April 2015.
Hexagons in a hexagon11s = 2+10/3√3 = 3.92450+3.947381150−2.29e-02-0.583behindFound by Johann Schellhorn in July 2025.
Hexagons in a hexagon12s = 3.94164+4.000000082−5.84e-02-1.481behindFound by Alpha Evolve in May 2025.
Hexagons in a hexagon13s = 44.014712736−1.47e-02-0.368behind
Hexagons in a hexagon14s = 4.26899+4.271218699−2.23e-03-0.052behindFound by Dominik Kamp in April 2026.
Hexagons in a hexagon15s = 4.44727+4.519829749−7.26e-02-1.632behindFound by Alex Kravatsky et al in February 2026.
Hexagons in a hexagon16s = 4.52746+4.640546365−1.13e-01-2.498behindFound by Alex Kravatsky et al in February 2026.
Hexagons in a hexagon17s = 4.6136+4.619689871−6.09e-03-0.132behindFound by Alex Kravatsky et al in February 2026.
Hexagons in a hexagon18s = 8/√3 = 4.618+4.619589055−7.87e-04-0.017reproducedFound by Maurizio Morandi in April 2015.
Hexagons in a hexagon19s = 8/√3 = 4.618+4.619270937−4.69e-04-0.010reproducedFound by Maurizio Morandi in April 2015.
Hexagons in a hexagon20s = 55.001369118−1.37e-03-0.027behind
Hexagons in a hexagon21s = 55.020405858−2.04e-02-0.408behind
Hexagons in a hexagon22s = (39+8√3)/10 = 5.285+5.515371047−2.30e-01-4.347behindFound by Maurizio Morandi in April 2015.
Hexagons in a hexagon23s = 5.39998+5.403412893−3.43e-03-0.064behindFound by Jonathan Viquerat in June 2026.
Hexagons in a hexagon24s = 19√3/6 = 5.484+5.486372533−1.54e-03-0.028behindFound by Maurizio Morandi in April 2015.
Hexagons in a hexagon25s = 5.62390+5.657226878−3.33e-02-0.593behindFound by Alex Kravatsky et al in February 2026.
Hexagons in a hexagon26s = 5.70972+5.811907653−1.02e-01-1.790behindFound by Alex Kravatsky et al in February 2026.
Hexagons in a hexagon27s = 5.71415+5.795204125−8.11e-02-1.418behindFound by Alex Kravatsky et al in February 2026.
Hexagons in a hexagon28s = 5.90893+5.919773982−1.08e-02-0.184behindFound by Alex Kravatsky et al in February 2026.
Hexagons in a hexagon29s = 66.001888785−1.89e-03-0.031behind
Hexagons in a hexagon30s = 66.002234563−2.23e-03-0.037behind
Hexagons in a hexagon31s = 66.001699172−1.70e-03-0.028behind
Hexagons in a hexagon32s = 6.26088+6.390413890−1.30e-01-2.069behindFound by Aristotle Papowitz in July 2026.
Hexagons in a hexagon33s = 6.26580+6.272610959−6.81e-03-0.109behindFound by Jonathan Viquerat in September 2026.
Hexagons in a pentagon2s = 2.46585+2.465852284−2.28e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Hexagons in a pentagon3s = 2.74282+2.742825935−5.93e-06-0.000reproducedFound by Ethan Riddle in May 2026.
Hexagons in a pentagon4s = 3.01521+3.015218981−8.98e-06-0.000reproducedFound by Bhavithran Ananthan in July 2026.
Hexagons in a pentagon5s = 3.21972+3.219728524−8.52e-06-0.000reproducedFound by Aristotle Papowitz in July 2026.
Hexagons in a pentagon6s = 3.54952+3.549533503−1.35e-05-0.000behindFound by Jonathan Viquerat in May 2026.
Hexagons in a pentagon7s = 3.79749+3.797494365−4.37e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Hexagons in a pentagon8s = 4.14916+4.149170533−1.05e-05-0.000behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a pentagon9s = 4.34314+4.343145221−5.22e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Hexagons in a pentagon10s = 4.55810+4.560096107−2.00e-03-0.044behindFound by Jonathan Viquerat in May 2026.
Hexagons in a pentagon11s = 4.71959+4.771278849−5.17e-02-1.095behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a pentagon12s = 4.91850+4.920964326−2.46e-03-0.050behindFound by Jonathan Viquerat in May 2026.
Hexagons in a pentagon13s = 5.10107+5.149011514−4.79e-02-0.940behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a pentagon14s = 5.29198+5.325191471−3.32e-02-0.628behindFound by Jake Loyd in June 2026.
Hexagons in a pentagon15s = 5.41337+5.597283830−1.84e-01-3.397behindFound by Jake Loyd in June 2026.
Hexagons in a pentagon16s = 5.61409+5.619880187−5.79e-03-0.103behindFound by Jake Loyd in June 2026.
Hexagons in a pentagon17s = 5.82103+5.826465576−5.44e-03-0.093behindFound by Jake Loyd in June 2026.
Hexagons in a pentagon18s = 5.94471+6.027336799−8.26e-02-1.390behindFound by Jonathan Viquerat in May 2026.
Hexagons in a pentagon19s = 6.10977+6.130026376−2.03e-02-0.332behindFound by Jonathan Viquerat in May 2026.
Hexagons in a pentagon20s = 6.24667+6.255128713−8.46e-03-0.135behindFound by Jake Loyd in June 2026.
Hexagons in a pentagon21s = 6.39216+6.603284138−2.11e-01-3.303behindFound by Jonathan Viquerat in August 2026.
Hexagons in a pentagon22s = 6.53472+6.616762015−8.20e-02-1.255behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a pentagon23s = 6.66271+6.727108139−6.44e-02-0.967behindFound by Jake Loyd in June 2026.
Hexagons in a pentagon24s = 6.77466+6.894234244−1.20e-01-1.765behindFound by Jake Loyd in June 2026.
Hexagons in a pentagon25s = 6.89098+6.894112888−3.13e-03-0.045behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a pentagon26s = 7.04734+7.097949920−5.06e-02-0.718behindFound by Aristotle Papowitz in July 2026.
Hexagons in a pentagon27s = 7.15307+7.243836160−9.08e-02-1.269behindFound by Aristotle Papowitz in July 2026.
Hexagons in a pentagon28s = 7.24805+7.463399196−2.15e-01-2.971behindFound by Jonathan Viquerat in August 2026.
Hexagons in a pentagon29s = 7.37833+7.406337512−2.80e-02-0.380behindFound by Jonathan Viquerat in August 2026.
Hexagons in a pentagon30s = 7.45985+7.462430944−2.58e-03-0.035behindFound by Aristotle Papowitz in July 2026.
Hexagons in a pentagon31s = 7.63254+7.821505910−1.89e-01-2.476behindFound by Jonathan Viquerat in August 2026.
Hexagons in a pentagon32s = 7.76619+7.988944739−2.23e-01-2.868behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a square2s = (1+2√3)/√2 = 3.156+3.156596572−4.79e-08-0.000reproduced
Hexagons in a square3s = 9(6–√3)/11 = 3.491+3.491958452−2.20e-08-0.000reproducedFound by Maurizio Morandi in March 2026.
Hexagons in a square4s = (7–√3)/√2 = 3.725+3.725002621−2.43e-08-0.000reproducedFound by Maurizio Morandi in March 2026.
Hexagons in a square5s = 7(3–√3)/2 = 4.437+4.437822251−7.79e-08-0.000reproducedFound by Maurizio Morandi in March 2026.
Hexagons in a square6s = 20(9–2√3)/23 = 4.813+4.814309278−4.85e-04-0.010reproducedFound by Maurizio Morandi in March 2026.
Hexagons in a square7s = 3√3 = 5.196+5.196152441−1.85e-08-0.000reproduced
Hexagons in a square8s = 3√3 = 5.196+5.196169448−1.70e-05-0.000reproduced
Hexagons in a square9s = (13–3√3)/√2 = 5.518+5.586322326−6.82e-02-1.235behindFound by Maurizio Morandi in March 2026.
Hexagons in a square10s = 6.10469+6.139442824−3.48e-02-0.569behindFound by Jonathan Viquerat in April 2026.
Hexagons in a square11s = 6.33218+6.342786233−1.06e-02-0.167behindFound by Maksymilian Jankowski in April 2026.
Hexagons in a square12s = 43(5–√3)/22 = 6.387+6.463461328−7.61e-02-1.192behindFound by Maurizio Morandi in March 2026.
Hexagons in a square13s = 6.75549+6.880645246−1.25e-01-1.853behindFound by Timo Berthold et al in May 2026.
Hexagons in a square14s = 4√3 = 6.928+6.928735303−5.32e-04-0.008reproduced
Hexagons in a square15s = 6.96367+7.471144542−5.07e-01-7.287behindFound by Maksymilian Jankowski in April 2026.
Hexagons in a square16s = (19–5√3)/√2 = 7.311+7.312060087−7.56e-04-0.010reproducedFound by Maurizio Morandi in April 2026.
Hexagons in a square17s = 7.60383+7.613511307−9.68e-03-0.127behindFound by Maksymilian Jankowski in April 2026.
Hexagons in a square18s = 32(9–2√3)/23 = 7.702+8.020652511−3.19e-01-4.136behindFound by Maurizio Morandi in April 2026.
Hexagons in a square19s = 25(3–√3)/4 = 7.924+7.935427436−1.07e-02-0.136behindFound by Maurizio Morandi in April 2026.
Hexagons in a square20s = 74(21–4√3)/131 = 7.948+8.023019262−7.41e-02-0.932behindFound by Maurizio Morandi in April 2026.
Hexagons in a square21s = 8.381+8.454500609−7.35e-02-0.877behindFound by Jonathan Viquerat in April 2026.
Hexagons in a square22s = 8.568+8.661774136−9.38e-02-1.094behindFound by Jonathan Viquerat in April 2026.
Hexagons in a square23s = 5√3 = 8.660+8.773274457−1.13e-01-1.305behindFound by Jonathan Viquerat in April 2026.
Hexagons in a square24s = 8.795+8.976423306−1.81e-01-2.063behindFound by Jonathan Viquerat in April 2026.
Hexagons in a square25s = 30(4√3–3)/13 = 9.065+9.073135561−8.05e-03-0.089behindFound by Jonathan Viquerat in April 2026.
Hexagons in a square26s = 9.22083+9.283343907−6.25e-02-0.678behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a square27s = 9.27733+9.514754089−2.37e-01-2.559behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a tan2s = 4.46410+4.464101617−1.62e-06-0.000reproduced
Hexagons in a tan3s = 4.94974+4.949747470−7.47e-06-0.000reproduced
Hexagons in a tan4s = 5.75097+5.750978159−8.16e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Hexagons in a tan5s = 6.50265+6.502661852−1.19e-05-0.000behindFound by Jonathan Viquerat in May 2026.
Hexagons in a tan6s = 6.74289+6.742898534−8.53e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Hexagons in a tan7s = 7.39923+7.451570119−5.23e-02-0.707behindFound by Jonathan Viquerat in May 2026.
Hexagons in a tan8s = 7.83340+7.844935132−1.15e-02-0.147behindFound by Jonathan Viquerat in May 2026.
Hexagons in a tan9s = 8.28267+8.283291528−6.22e-04-0.008behindFound by Jonathan Viquerat in May 2026.
Hexagons in a tan10s = 8.53604+8.956949395−4.21e-01-4.931behindFound by Jonathan Viquerat in May 2026.
Hexagons in a tan11s = 9.06093+9.071395972−1.05e-02-0.116behindFound by Jonathan Viquerat in May 2026.
Hexagons in a tan12s = 9.41319+9.808078313−3.95e-01-4.195behindFound by Jonathan Viquerat in May 2026.
Hexagons in a tan13s = 9.70087+9.709132820−8.26e-03-0.085behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a tan14s = 10.03836+10.443615740−4.05e-01-4.037behindFound by Jonathan Viquerat in May 2026.
Hexagons in a tan15s = 10.32919+10.505659878−1.76e-01-1.708behindFound by Jonathan Viquerat in May 2026.
Hexagons in a tan16s = 10.71312+11.345667211−6.33e-01-5.904behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a tan17s = 10.97884+11.002867955−2.40e-02-0.219behindFound by Jonathan Viquerat in May 2026.
Hexagons in a tan18s = 11.27299+11.722584467−4.50e-01-3.988behindFound by Jonathan Viqueratl in May 2026.
Hexagons in a tan19s = 11.49013+11.899952185−4.10e-01-3.567behindFound by Jonathan Viquerat in May 2026.
Hexagons in a tan20s = 11.77041+12.204805030−4.34e-01-3.691behindFound by Jonathan Viquerat in May 2026.
Hexagons in a triangle2s = 55.000000002−2.00e-09-0.000reproduced
Hexagons in a triangle3s = 55.000000002−2.00e-09-0.000reproduced
Hexagons in a triangle4s = 66.000000005−4.96e-09-0.000reproduced
Hexagons in a triangle5s = 5(1+√3)/2 = 6.8301+6.830127141−1.22e-07-0.000reproducedFound by Maurizio Morandi in April 2015.
Hexagons in a triangle6s = 2(1+√6) = 6.89897+6.898982802−3.32e-06-0.000reproducedFound by Jonathan Viquerat in April 2026.
Hexagons in a triangle7s = 88.000000137−1.37e-07-0.000reproduced
Hexagons in a triangle8s = 25/3 = 8.3333+8.571330343−2.38e-01-2.856behindFound by Erich Friedman in April 2015.
Hexagons in a triangle9s = 8.64494+8.660436142−1.55e-02-0.179behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a triangle10s = 5√3 = 8.6602+8.724733385−6.45e-02-0.745behind
Hexagons in a triangle11s = 9.54823+9.732051441−1.84e-01-1.925behindFound by Jonathan Viquerat in April 2026.
Hexagons in a triangle12s = 9.96429+10.137567175−1.73e-01-1.739behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a triangle13s = 10.28857+10.392305037−1.04e-01-1.008behindFound by Bhavithran Ananthan in July 2026.
Hexagons in a triangle14s = 6√3 = 10.3923+10.486857122−9.46e-02-0.910behind
Hexagons in a triangle15s = 6√3 = 10.3923+10.464654420−7.23e-02-0.696behind
Hexagons in a triangle16s = 11.36383+11.667663088−3.04e-01-2.674behindFound by Timo Berthold et al in May 2026.
Hexagons in a triangle17s = 11.63454+12.099534132−4.65e-01-3.997behindFound by Jonathan Viquerat in August 2026.
Hexagons in a triangle18s = 11.91421+12.219619049−3.05e-01-2.563behindFound by Jake Loyd in May 2026.
Hexagons in a triangle19s = 1212.256864849−2.57e-01-2.141behind
Hexagons in a triangle20s = 7√3 = 12.1243+12.192384391−6.80e-02-0.561behind
Hexagons in a triangle21s = 7√3 = 12.1243+12.125851770−1.50e-03-0.012behind
Hexagons in a triangle22s = 12.99518+13.007086163−1.19e-02-0.092behindFound by Jonathan Viquerat in May 2026.
Hexagons in a triangle23s = 13.39989+13.442473671−4.26e-02-0.318behindFound by Jake Loyd in June 2026.
Hexagons in a triangle24s = 13.61925+13.966720728−3.47e-01-2.551behindFound by Thomas Greenleaf in June 2026.
Hexagons in a triangle25s = 13.77683+13.979257917−2.02e-01-1.469behindFound by Jake Loyd in June 2026.
Hexagons in a triangle26s = 7√3 = 13.85677+14.023877881−1.67e-01-1.206behind
Hexagons in a triangle27s = 7√3 = 13.85677+13.968289991−1.12e-01-0.805behind
Hexagons in a triangle28s = 7√3 = 13.85677+13.962619333−1.06e-01-0.764behind
Hexagons in a triangle29s = 14.78557+15.158510811−3.73e-01-2.522behindFound by Haowei Lin in July 2026.
Hexagons in a triangle30s = 1515.145681760−1.46e-01-0.971behind
Hexagons in a triangle31s = 1515.013522906−1.35e-02-0.090behind
Hexagons in a triangle32s = 15.47573+15.593129679−1.17e-01-0.759behindFound by Haowei Lin in July 2026.
Hexagons in an L2s = √3 = 1.73205+1.732050808−6.93e-10-0.000reproduced
Hexagons in an L3s = 1.88648+1.886483830−3.83e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Hexagons in an L4s = 2.41072+2.418007196−7.29e-03-0.302behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L5s = 2.59807+2.598076245−6.25e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Hexagons in an L6s = 2.90072+2.900723594−3.59e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Hexagons in an L7s = 3.08493+3.152617949−6.77e-02-2.194behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L8s = 3.26559+3.285549951−2.00e-02-0.611behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L9s = 3.39536+3.397223501−1.86e-03-0.055behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L10s = 2√3 = 3.46410+3.464104855−3.24e-06-0.000reproduced
Hexagons in an L11s = 3.48851+3.609361556−1.21e-01-3.464behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L12s = 3.68106+3.684491867−3.43e-03-0.093behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L13s = 3.94486+3.953640396−8.78e-03-0.223behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L14s = 4.09579+4.121299441−2.55e-02-0.623behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L15s = 4.2134+4.226635280−1.32e-02-0.314behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L16s = 4.27526+4.393725093−1.18e-01-2.771behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L17s = 4.51508+4.559402470−4.43e-02-0.982behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L18s = 4.59397+4.772506921−1.79e-01-3.886behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L19s = 4.70835+4.786427500−7.81e-02-1.658behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L20s = 4.75480+4.755577704−7.78e-04-0.016behindFound by Jonathan Viquerat in June 2026.
Hexagons in an L21s = 4.90214+4.962190930−6.01e-02-1.225behindFound by Jonathan Viquerat in September 2026.
Hexagons in an L22s = 4.93211+5.203163551−2.71e-01-5.496behindFound by Jonathan Viquerat in September 2026.
Hexagons in an octagon2s = 2√3/(1+√2) = 1.43487+1.434877871−5.74e-10-0.000reproduced
Hexagons in an octagon3s = 3+2√6–2√2–2√3 = 1.60645+1.606450746−6.43e-10-0.000reproducedFound by Jonathan Viquerat in May 2026.
Hexagons in an octagon4s = 1.75630+1.756300707−7.07e-07-0.000reproducedFound by Jonathan Viquerat in May 2026.
Hexagons in an octagon5s = 1.98707+1.987076725−6.72e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Hexagons in an octagon6s = 2.16435+2.166020224−1.67e-03-0.077behindFound by Nicolas Campailla in May 2026.
Hexagons in an octagon7s = 2.18284+2.185668273−2.83e-03-0.130behindFound by Jonathan Viquerat in May 2026.
Hexagons in an octagon8s = 2.40792+2.407922002−2.00e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Hexagons in an octagon9s = 2.62665+2.635542528−8.89e-03-0.339behindFound by Jonathan Viquerat in May 2026.
Hexagons in an octagon10s = 2.74238+2.742383805−3.81e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Hexagons in an octagon11s = 4√3/(1+√2) = 2.86975+2.885213255−1.55e-02-0.539behindFound by Jonathan Viquerat in May 2026.
Hexagons in an octagon12s = 2.92139+2.975953865−5.46e-02-1.868behindFound by Timo Berthold et al in May 2026.
Hexagons in an octagon13s = 3.07201+3.143116289−7.11e-02-2.315behindFound by Jonathan Viquerat in May 2026.
Hexagons in an octagon14s = 3.13475+3.157819688−2.31e-02-0.736behindFound by Jonathan Viquerat in May 2026.
Hexagons in an octagon15s = 3.28379+3.362235689−7.84e-02-2.389behindFound by Timo Berthold et al in May 2026.
Hexagons in an octagon16s = 3.37007+3.373940328−3.87e-03-0.115behindFound by Timo Berthold et al in May 2026.
Hexagons in an octagon17s = 3.47655+3.510232976−3.37e-02-0.969behindFound by Jake Loyd in June 2026.
Hexagons in an octagon18s = 3.56008+3.602195001−4.21e-02-1.183behindFound by Timo Berthold et al in May 2026.
Hexagons in an octagon19s = 5√3/(1+√2) = 3.58719+3.605927450−1.87e-02-0.522behindFound by Jonathan Viquerat in May 2026.
Hexagons in an octagon20s = 3.72605+3.733249358−7.20e-03-0.193behindFound by Bhavithran Ananthan in July 2026.
Hexagons in an octagon21s = 3.81006+3.947977892−1.38e-01-3.620behindFound by Bhavithran Ananthan in July 2026.
Hexagons in an octagon22s = 3.91915+3.972401580−5.33e-02-1.359behindFound by Thomas Greenleaf in June 2026.
L's in a circle2r = √13/2 = 1.802+1.838477657−3.57e-02-1.981behindFound by David W. Cantrell in June 2005.
L's in a circle3r = √305/8 = 2.183+2.183031178−2.88e-08-0.000reproducedFound by Maurizio Morandi in August 2007.
L's in a circle4r = √5 = 2.236+2.467669237−2.32e-01-10.358behindFound by Erich Friedman in June 2005.
L's in a circle5r = 2.56858+2.701273547−1.33e-01-5.166behindFound by Jake Loyd in June 2026.
L's in a circle6r = √8249/32 = 2.838+2.917124492−7.89e-02-2.779behindFound by Erich Friedman in June 2005.
L's in a circle7r = √34/2 = 2.915+3.208641115−2.93e-01-10.057behindFound by Erich Friedman in June 2005.
L's in a circle8r = √10 = 3.162+3.288323765−1.26e-01-3.986behindFound by Erich Friedman in June 2005.
L's in a circle9r = 3.36482+3.494502283−1.30e-01-3.854behindFound by Jake Loyd in June 2026.
L's in a circle10r = 3.490+3.704363824−2.14e-01-6.142behindFound by Maurizio Morandi in June 2026.
L's in a circle11r = 3.68165+3.919051561−2.37e-01-6.448behindFound by Jake Loyd in June 2026.
L's in a circle12r = 3.80266+4.107243066−3.05e-01-8.010behindFound by Jake Loyd in June 2026.
L's in a circle13r = 3.94961+4.318398990−3.69e-01-9.337behindFound by Jake Loyd in June 2026.
L's in a circle14r = √17 = 4.123+4.476409698−3.53e-01-8.569behindFound by David W. Cantrell in August 2007.
L's in a circle15r = 4.214+4.389230133−1.75e-01-4.158behindFound by Maurizio Morandi in August 2007.
L's in a circle16r = √74/2 = 4.301+4.753476159−4.52e-01-10.516behindFound by Maurizio Morandi in September 2008.
L's in a circle17r = 2√5 = 4.472+4.650548801−1.78e-01-3.990behindFound by Maurizio Morandi in September 2008.
L's in a circle18r = √86609/64 = 4.598+5.006390519−4.08e-01-8.874behindFound by Maurizio Morandi in September 2008.
L's in a circle19r = 4.70546+5.137988770−4.33e-01-9.192behindFound by Jake Loyd in June 2026.
L's in a circle20r = 4.77260+5.006958019−2.34e-01-4.910behindFound by Jake Loyd in June 2026.
L's in a circle21r = 5.09246+5.617523088−5.25e-01-10.311behindFound by Jonathan Viquerat in August 2026.
L's in a circle22r = 5.21859+5.449743897−2.31e-01-4.429behindFound by Jonathan Viquerat in August 2026.
L's in a circle23r = 5.30468+5.932184358−6.28e-01-11.829behindFound by Jonathan Viquerat in August 2026.
L's in a domino2s = 22.000000001−8.00e-10-0.000reproduced
L's in a domino3s = 5/2 = 2.52.500000001−1.00e-09-0.000reproduced
L's in a domino4s = 6(1+√2)/5 = 2.897+3.000000013−1.03e-01-3.553behindFound by Erich Friedman in April 2026.
L's in a domino5s = 33.000000001−1.20e-09-0.000reproduced
L's in a domino6s = 33.000000001−1.20e-09-0.000reproduced
L's in a domino7s = 7/3+√2 = 3.747+4.000000002−2.52e-01-6.737behindFound by Erich Friedman in April 2026.
L's in a domino8s = 44.000374442−3.74e-04-0.009behind
L's in a domino9s = 44.059665940−5.97e-02-1.492behind
L's in a domino10s = 44.098558160−9.86e-02-2.464behind
L's in a domino11s = 3(6+√2)/5 = 4.448+4.514999983−6.65e-02-1.494behindFound by Maurizio Morandi in April 2026.
L's in a domino12s = 9/2 = 4.54.519711236−1.97e-02-0.438reproduced
L's in a domino13s = (14+11√2)/6 = 4.926+5.514782547−5.89e-01-11.951behindFound by Maurizio Morandi in April 2026.
L's in a domino14s = 55.520838956−5.21e-01-10.417behind
L's in a domino15s = 55.213747181−2.14e-01-4.275behind
L's in a domino16s = 56.007645836−1.0076-20.153behind
L's in a domino17s = 3+7√2/4 = 5.474+5.879531928−4.05e-01-7.392behindFound by Maurizio Morandi in April 2026.
L's in a domino18s = 11/2 = 5.56.777301300−1.2773-23.224behind
L's in a domino19s = 3+2√2 = 5.828+6.000163758−1.72e-01-2.947behindFound by Maurizio Morandi in April 2026.
L's in a domino20s = 66.737304419−7.37e-01-12.288behind
L's in a domino21s = 66.002026411−2.03e-03-0.034behind
L's in a domino22s = 66.125135880−1.25e-01-2.086behind
L's in a domino23s = 66.158544202−1.59e-01-2.642behind
L's in a domino24s = 67.335283642−1.3353-22.255behind
L's in a hexagon2s = 12^(1/4) = 1.861+1.861209719−7.45e-10-0.000reproducedFound by Maurizio Morandi in May 2026.
L's in a hexagon3s = 1/2 + √3 = 2.232+2.345396256−1.13e-01-5.078behindFound by Maurizio Morandi in May 2026.
L's in a hexagon4s = 2.50337+2.597045137−9.37e-02-3.742behindFound by Jake Loyd in June 2026.
L's in a hexagon5s = 2.85988+3.016462853−1.57e-01-5.475behindFound by Jake Loyd in May 2026
L's in a hexagon6s = 3.04254+3.296724953−2.54e-01-8.354behindFound by Jake Loyd in June 2026.
L's in a hexagon7s = 3.25359+3.481010864−2.27e-01-6.990behindFound by Jake Loyd in June 2026.
L's in a hexagon8s = 2√3 = 3.464+3.660155527−1.96e-01-5.660behind
L's in a hexagon9s = 3.65374+3.730611769−7.69e-02-2.104behindFound by Jake Loyd in June 2026.
L's in a hexagon10s = 3.80531+4.143900398−3.39e-01-8.898behindFound by Jake Loyd in June 2026.
L's in a hexagon11s = 7/√3 = 4.041+4.170520155−1.29e-01-3.194behind
L's in a hexagon12s = 4.15868+4.618802156−4.60e-01-11.064behindFound by Jake Loyd in June 2026.
L's in a hexagon13s = 4.33273+4.796461635−4.64e-01-10.703behindFound by Jake Loyd in June 2026.
L's in a hexagon14s = 4.46716+4.812697970−3.46e-01-7.735behindFound by Jake Loyd in June 2026.
L's in a hexagon15s = 8/√3 = 4.61880+5.004881514−3.86e-01-8.359behind
L's in a hexagon16s = 4.72806+5.209188115−4.81e-01-10.176behindFound by Aapo Lipponen in July 2026.
L's in a hexagon17s = 4.93064+5.826276567−8.96e-01-18.165behindFound by Aaden Abraham in July 2026.
L's in a hexagon18s = 5.09795+5.196301569−9.84e-02-1.929behindFound by Aapo Lipponen in July 2026.
L's in a hexagon19s = 3√3 = 5.19615+5.316509961−1.20e-01-2.316behindFound by Maurizio Morandi in July 2026.
L's in a hexagon20s = 2+17√3/9 = 5.27165+5.653607000−3.82e-01-7.245behindFound by Maurizio Morandi in August 2026.
L's in a hexagon21s = (13+5√3)/4 = 5.41506+5.607170102−1.92e-01-3.548behindFound by Maurizio Morandi in July 2026.
L's in a hexagon22s = 7(1+1/√3)/2 = 5.52072+5.759468273−2.39e-01-4.324behindFound by Maurizio Morandi in August 2026.
L's in a hexagon23s = 7√6/3 = 5.71547+5.842662889−1.27e-01-2.225behindFound by Aaden Abraham in July 2026.
L's in a hexagon24s = 10/√3 = 5.77350+6.852530162−1.0790-18.689behindFound by Aaden Abraham in July 2026.
L's in a hexagon25s = 7/3+2√3 = 5.79743+6.670881300−8.73e-01-15.066behindFound by Maurizio Morandi in August 2026.
L's in a hexagon26s = 9/2+5√3/6 = 5.94337+6.497263970−5.54e-01-9.319behindFound by Maurizio Morandi in August 2026.
L's in a hexagon27s = 9/2+11√3/12 = 6.08771+6.690304008−6.03e-01-9.898behindFound by Maurizio Morandi in July 2026.
L's in a hexagon28s = 7/2+19√/12 = 6.24241+6.755081205−5.13e-01-8.213behindFound by Maurizio Morandi in July 2026.
L's in a hexagon29s = 11/√3 = 6.35085+6.979601795−6.29e-01-9.900behindFound by Aaden Abraham in July 2026.
L's in a hexagon30s = (11+√3)/2 = 6.36602+6.999862792−6.34e-01-9.957behindFound by Maurizio Morandi in July 2026.
L's in a pentagon2s = 2.33322+2.333225280−5.28e-06-0.000reproduced
L's in a pentagon3s = 2.79081+2.835425599−4.46e-02-1.599behindFound by Jonathan Viquerat in May 2026.
L's in a pentagon4s = 3.07149+3.071493579−3.58e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
L's in a pentagon5s = 3.41569+3.534744261−1.19e-01-3.486behindFound by Jake Loyd in June 2026.
L's in a pentagon6s = 3.74743+3.866262935−1.19e-01-3.171behindFound by Jake Loyd in June 2026.
L's in a pentagon7s = 3.96756+4.230121800−2.63e-01-6.618behindFound by Jake Loyd in June 2026.
L's in a pentagon8s = 4.25642+4.348816400−9.24e-02-2.171behindFound by Jake Loyd in June 2026.
L's in a pentagon9s = 4.50713+4.786312823−2.79e-01-6.194behindFound by Jake Loyd in June 2026.
L's in a pentagon10s = 3√5–3+3√(1–2/√5) = 4.65767+4.896305721−2.13e-01-4.580behindFound by Jake Loyd in June 2026.
L's in a pentagon11s = 4.86103+5.499103726−6.38e-01-13.126behindFound by Jake Loyd in June 2026.
L's in a pentagon12s = 5.07519+5.589446321−5.14e-01-10.133behindFound by Jake Loyd in June 2026.
L's in a pentagon13s = 5.29475+5.447805637−1.53e-01-2.891behindFound by Jake Loyd in June 2026.
L's in a pentagon14s = 5.49989+5.641632514−1.42e-01-2.577behindFound by Jake Loyd in June 2026.
L's in a pentagon15s = 5.63035+5.866756194−2.36e-01-4.199behindFound by Jake Loyd in June 2026.
L's in a pentagon16s = 5.77738+6.333255302−5.56e-01-9.622behindFound by Jake Loyd in June 2026.
L's in a pentagon17s = 5.92697+6.149545169−2.23e-01-3.755behindFound by Jake Loyd in June 2026.
L's in a pentagon18s = 6.16318+6.882869254−7.20e-01-11.677behindFound by Jake Loyd in June 2026.
L's in a pentagon19s = 6.33939+6.588545708−2.49e-01-3.930behindFound by Jake Loyd in June 2026.
L's in a pentagon20s = 6.45886+7.059241382−6.00e-01-9.295behindFound by Jake Loyd in June 2026.
L's in a pentagon21s = 4√5–7/2+√(25–10√5) = 7.06887+7.301104174−2.32e-01-3.285behindFound by Maurizio Morandi in August 2026.
L's in a pentagon22s = 4√5–7/2+√(25–10√5) = 7.06887+7.433872086−3.65e-01-5.164behindFound by Maurizio Morandi in August 2026.
L's in a pentagon23s = 4√5–7/2+√(25–10√5) = 7.06887+8.213220212−1.1443-16.189behindFound by Maurizio Morandi in August 2026.
L's in a pentagon24s = 4√5–7/2+√(25–10√5) = 7.06887+7.560596580−4.92e-01-6.956behindFound by Maurizio Morandi in August 2026.
L's in a pentagon25s = 7√5–14+18√(1–2/√5) = 7.50103+9.152320621−1.6513-22.014behindFound by Maurizio Morandi in August 2026.
L's in a pentagon26s = 7√5–14+18√(1–2/√5) = 7.50103+9.256622641−1.7556-23.405behindFound by Maurizio Morandi in August 2026.
L's in a pentagon27s = 7√5–14+18√(1–2/√5) = 7.50103+9.495205364−1.9942-26.585behindFound by Maurizio Morandi in August 2026.
L's in a pentagon28s = 4√5–3+6√(1–2/√5) = 7.89379+10.273501020−2.3797-30.147behindFound by Maurizio Morandi in August 2026.
L's in a pentagon29s = 4√5–3+6√(1–2/√5) = 7.89379+7.919210282−2.54e-02-0.322behindFound by Maurizio Morandi in August 2026.
L's in a pentagon30s = 4√5–3+6√(1–2/√5) = 7.89379+11.164303847−3.2705-41.431behindFound by Maurizio Morandi in August 2026.
L's in a square2s = 33.000000001−1.20e-09-0.000reproduced
L's in a square3s = (3 + 3√2) / 2 = 3.621+3.621320345−1.45e-09-0.000reproducedFound by Serhiy Grabarchuk in July 2005.
L's in a square4s = 44.000000002−1.60e-09-0.000reproduced
L's in a square5s = 44.687741121−6.88e-01-17.194behind
L's in a square6s = 7 / √2 = 4.949+5.000000002−5.03e-02-1.015behindFound by Erich Friedman in June 2005.
L's in a square7s = 55.559648748−5.60e-01-11.193behind
L's in a square8s = 56.000000105−1.0000-20.000behind
L's in a square9s = 5.81902+6.001666798−1.83e-01-3.139behindFound by Aapo Lipponen in July 2026.
L's in a square10s = 66.000003240−3.24e-06-0.000reproduced
L's in a square11s = 66.190161464−1.90e-01-3.169behind
L's in a square12s = 66.000084194−8.42e-05-0.001behind
L's in a square13s = 4 + 2√2 = 6.828+7.240894024−4.12e-01-6.041behindFound by Maurizio Morandi in June 2012.
L's in a square14s = 77.951601482−9.52e-01-13.594behind
L's in a square15s = 78.416133301−1.4161-20.230behind
L's in a square16s = 78.014047892−1.0140-14.486behind
L's in a square17s = 19/3 + √2 = 7.747+9.705806161−1.9583-25.278behindFound by Maurizio Morandi in June 2012.
L's in a square18s = 13/2 + √2 = 7.914+9.869962235−1.9557-24.713behindFound by Maurizio Morandi in June 2012.
L's in a square19s = 88.004256597−4.26e-03-0.053behind
L's in a square20s = 88.004886225−4.89e-03-0.061behind
L's in a square21s = 89.007947202−1.0079-12.599behind
L's in a square22s = 3 + 4√2 = 8.656+9.979855242−1.3230-15.284behindFound by Maurizio Morandi in June 2012.
L's in a square23s = 15/2 + √2 = 8.914+9.001503714−8.73e-02-0.979behindFound by Maurizio Morandi in June 2012.
L's in a square24s = 911.074372884−2.0744-23.049behind
L's in a square25s = 912.298400800−3.2984-36.649behind
L's in a square26s = 912.166465678−3.1665-35.183behind
L's in a square27s = 910.009685870−1.0097-11.219behind
L's in a square28s = 7 + 2√2 = 9.828+11.238526973−1.4101-14.348behindFound by Maurizio Morandi in May 2026.
L's in a tan2s = 3√2 = 4.242+4.242640689−1.70e-09-0.000reproduced
L's in a tan3s = 55.000000002−2.00e-09-0.000reproduced
L's in a tan4s = 4√2 = 5.656+5.828427144−1.72e-01-3.033behindFound by Maurizio Morandi in July 2012
L's in a tan5s = 2 + 3√2 = 6.242+6.949771383−7.07e-01-11.329behindFound by Maurizio Morandi in July 2012.
L's in a tan6s = 77.000185567−1.86e-04-0.003behind
L's in a tan7s = 77.778174656−7.78e-01-11.117behind
L's in a tan8s = 11/√2 = 7.778+8.242640845−4.64e-01-5.972behind
L's in a tan9s = 89.192388567−1.1924-14.905behind
L's in a tan10s = 6√2 = 8.485+8.868376058−3.83e-01-4.515behind
L's in a tan11s = 99.003645016−3.65e-03-0.041behind
L's in a tan12s = 99.903497756−9.03e-01-10.039behind
L's in a tan13s = 2 + 11/√2 = 9.778+10.801757451−1.0236-10.468behindFound by Maurizio Morandi in July 2012.
L's in a tan14s = 7√2 = 9.899+11.242640885−1.3431-13.569behind
L's in a tan15s = 1011.137117314−1.1371-11.371behind
L's in a tan16s = 15/√2 = 10.606+11.008200014−4.02e-01-3.787behind
L's in a tan17s = 8 + 2√2 = 10.828+11.007000945−1.79e-01-1.649behindFound by Maurizio Morandi in January 2025.
L's in a tan18s = 1112.353970185−1.3540-12.309behind
L's in a tan19s = 8√2 = 11.313+12.005596071−6.92e-01-6.116behindFound by Maurizio Morandi in January 2025.
L's in a tan20s = 4 + 11/√2 = 11.778+15.788035212−4.0099-34.045behindFound by Maurizio Morandi in January 2025.
L's in a tan21s = 1212.828699113−8.29e-01-6.906behind
L's in a tan22s = 1214.471002634−2.4710-20.592behind
L's in a triangle2s = 4 + 2/√3 = 5.15470+5.154700540−2.06e-09-0.000reproduced
L's in a triangle3s = 3 + 3√3/2 = 5.59807+5.598076214−2.24e-09-0.000reproducedFound by Jonathan Viquerat in May 2026.
L's in a triangle4s = 6.58646+6.618802177−3.23e-02-0.491behindFound by Jonathan Viquerat in May 2026.
L's in a triangle5s = 6 + 2/√3 = 7.15470+7.386751549−2.32e-01-3.243behindFound by Jonathan Viquerat in May 2026.
L's in a triangle6s = 4 + 2√3 = 7.46410+7.732050956−2.68e-01-3.590behindFound by Maurizio Morandi in May 2026.
L's in a triangle7s = 7 + 2/√3 = 8.15470+8.309401124−1.55e-01-1.897behindFound by Jonathan Viquerat in May 2026.
L's in a triangle8s = 7 + √3 = 8.73205+9.308578082−5.77e-01-6.602behindFound by Jonathan Viquerat in May 2026.
L's in a triangle9s = 5 + 7/√3 = 9.04145+9.389690663−3.48e-01-3.852behindFound by Maurizio Morandi in May 2026.
L's in a triangle10s = 6 + 2√3 = 9.46410+10.158671484−6.95e-01-7.339behindFound by Maurizio Morandi in May 2026.
L's in a triangle11s = 4 + 10/√3 = 9.77350+10.543669557−7.70e-01-7.880behindFound by Maurizio Morandi in May 2026.
L's in a triangle12s = 10.30175+11.104703966−8.03e-01-7.794behindFound by Aapo Lipponen in July 2026.
L's in a triangle13s = 9 + √3 = 10.73205+11.598910760−8.67e-01-8.077behindFound by Maurizio Morandi in May 2026.
L's in a triangle14s = 7 + 7/√3 = 11.04145+12.033956750−9.93e-01-8.989behindFound by Maurizio Morandi in May 2026.
L's in a triangle15s = 5 + 11/√3 = 11.35085+12.044698914−6.94e-01-6.113behindFound by Maurizio Morandi in May 2026.
L's in a triangle16s = 10 + √3 = 11.73205+12.183715088−4.52e-01-3.850behindFound by Maurizio Morandi in May 2026.
L's in a triangle17s = 4 + 14/√3 = 12.08290+12.733696635−6.51e-01-5.386behindFound by Maurizio Morandi in May 2026.
L's in a triangle18s = 9 + 2√3 = 12.46410+13.701406967−1.2373-9.927behindFound by Maurizio Morandi in May 2026.
L's in a triangle19s = 11 + √3 = 12.73205+13.313289332−5.81e-01-4.565behindFound by Maurizio Morandi in May 2026.
L's in a triangle20s = 13.00966+13.624588726−6.15e-01-4.727behindFound by Aapo Lipponen in July 2026.
L's in a triangle21s = 13.30935+13.806774338−4.97e-01-3.737behindFound by Aapo Lipponen in July 2026.
L's in a triangle22s = 2 + 20/√3 = 13.54700+14.279556029−7.33e-01-5.407behindFound by Maurizio Morandi in June 2026.
L's in a triangle23s = 14.19776+15.888888496−1.6911-11.911behindFound by Aapo Lipponen in July 2026.
L's in a triangle24s = 15.00964+15.507431689−4.98e-01-3.316behindFound by Aapo Lipponen in July 2026.
L's in a triangle25s = 15.20151+16.338080284−1.1366-7.477behindFound by Aapo Lipponen in July 2026.
L's in a triangle26s = 15.22482+15.285748525−6.09e-02-0.400behindFound by Aapo Lipponen in July 2026.
L's in a triangle27s = 15.65894+18.004449727−2.3455-14.979behindFound by Aapo Lipponen in July 2026.
L's in a triangle28s = 16.14341+17.751403312−1.6080-9.961behindFound by Aapo Lipponen in July 2026.
L's in a triangle29s = 16.39862+16.248807784+1.50e-010.914beatenFound by Aapo Lipponen in July 2026.
L's in a triangle30s = 16.46648+16.387913898+7.86e-020.477beatenFound by Aapo Lipponen in July 2026.
L's in an L2s = 22.000000001−8.00e-10-0.000reproduced
L's in an L3s = 22.000000001−8.00e-10-0.000reproduced
L's in an L4s = 22.500000035−5.00e-01-25.000behind
L's in an L5s = 5/2 = 2.52.766058055−2.66e-01-10.642behind
L's in an L6s = 1 + 4√2/3 = 2.885+3.000000001−1.14e-01-3.965behindFound by Maurizio Morandi in July 2012.
L's in an L7s = 33.000000008−7.80e-09-0.000reproduced
L's in an L8s = 33.024069525−2.41e-02-0.802behind
L's in an L9s = 33.616929642−6.17e-01-20.564behind
L's in an L10s = 7/2 = 3.53.988150976−4.88e-01-13.947behind
L's in an L11s = 7/3 + √2 = 3.747+4.009766409−2.62e-01-6.998behindFound by Maurizio Morandi in July 2012.
L's in an L12s = (19 + 9√2) / 8 = 3.965+4.014630916−4.86e-02-1.227behindFound by Maurizio Morandi in July 2012.
L's in an L13s = 44.119791710−1.20e-01-2.995behind
L's in an L14s = 44.001371943−1.37e-03-0.034behind
L's in an L15s = 44.463028414−4.63e-01-11.576behind
L's in an L16s = 44.531039045−5.31e-01-13.276behind
L's in an L17s = 9/2 = 4.55.009163648−5.09e-01-11.315behind
L's in an L18s = 9/2 = 4.55.000241007−5.00e-01-11.116behind
L's in an L19s = 3 + 5√2/4 = 4.767+5.069744837−3.02e-01-6.335behindFound by Maurizio Morandi in June 2026.
L's in an L20s = 3(6 + 5√2)/8 = 4.901+5.003695349−1.02e-01-2.082behindFound by Maurizio Morandi in June 2026.
L's in an L21s = 55.179017747−1.79e-01-3.580behind
L's in an L22s = 55.539286028−5.39e-01-10.786behind
L's in an L23s = 55.524807816−5.25e-01-10.496behind
L's in an L24s = 56.007678155−1.0077-20.154behind
L's in an L25s = 56.037571023−1.0376-20.751behind
L's in an octagon2s = √(5–√2–√(8√2–9)) = 1.43690+1.436905880−5.75e-10-0.000reproducedFound by Jonathan Viquerat in May 2026.
L's in an octagon3s = 10(3–2√2) = 1.71572+1.734478077−1.87e-02-1.093behindFound by Aapo Lipponen in July 2026.
L's in an octagon4s = 3(2–√2) = 1.75735+1.984773653−2.27e-01-12.941behindFound by Aapo Lipponen in July 2026
L's in an octagon5s = 5/(1+√2) = 2.07106+2.071067850−3.82e-08-0.000reproducedFound by Jonathan Viquerat in May 2026
L's in an octagon6s = 13(3–2√2) = 2.23044+2.414213600−1.84e-01-8.239behindFound by Jonathan Viquerat in May 2026.
L's in an octagon7s = 4(2–√2) = 2.34314+2.574118585−2.31e-01-9.857behindFound by Maurizio Morandi in May 2026.
L's in an octagon8s = 6(√2–1) = 2.48528+2.536326847−5.10e-02-2.054behindFound by Maurizio Morandi in May 2026.
L's in an octagon9s = 11(3√2–4) = 2.66904+2.861793004−1.93e-01-7.222behindFound by Maurizio Morandi in May 2026.
L's in an octagon10s = 2(11–√2)/7 = 2.73879+3.111391110−3.73e-01-13.604behindFound by Maurizio Morandi in May 2026.
L's in an octagon11s = 7(√2–1) = 2.89949+3.139674404−2.40e-01-8.284behindFound by Maurizio Morandi in May 2026.
L's in an octagon12s = 5(2–√2) = 2.92893+3.299621604−3.71e-01-12.656behindFound by Maurizio Morandi in May 2026.
L's in an octagon13s = 13(3√2–4) = 3.15432+3.314640731−1.60e-01-5.082behindFound by Maurizio Morandi in May 2026.
L's in an octagon14s = 5(4√2–5) = 3.28427+3.541263623−2.57e-01-7.825behindFound by Maurizio Morandi in August 2026.
L's in an octagon15s = 25(8–5√2)/7 = 3.31761+3.454278732−1.37e-01-4.119behindFound by Maurizio Morandi in May 2026.
L's in an octagon16s = 20(3–2√2) = 3.43145+3.813869370−3.82e-01-11.144behindFound by Maurizio Morandi in May 2026.
L's in an octagon17s = 6(2–√2) = 3.51471+4.187220735−6.73e-01-19.134behindFound by Maurizio Morandi in May 2026.
L's in an octagon18s = 25(2–√2)/4 = 3.66116+3.811264717−1.50e-01-4.100behindFound by Maurizio Morandi in May 2026.
L's in an octagon19s = 9(√2–1) = 3.72792+4.048003676−3.20e-01-8.586behindFound by Maurizio Morandi in May 2026.
L's in an octagon20s = 22(3–2√2) = 3.77460+4.047569142−2.73e-01-7.232behindFound by Maurizio Morandi in May 2026.
L's in an octagon21s = 16(3√2–4) = 3.88225+4.268214483−3.86e-01-9.942behindFound by Maurizio Morandi in August 2026.
L's in an octagon22s = 27(2–√2)/4 = 3.95405+4.409123544−4.55e-01-11.509behindFound by Maurizio Morandi in July 2026.
L's in an octagon23s = 7(2–√2) = 4.10050+4.255395259−1.55e-01-3.777behindFound by Maurizio Morandi in July 2026.
L's in an octagon24s = 10(√2–1) = 4.14213+5.062687516−9.21e-01-22.224behindFound by Maurizio Morandi in July 2026.
L's in an octagon25s = 10(√2–1) = 4.14213+4.743914781−6.02e-01-14.528behindFound by Maurizio Morandi in July 2026.
L's in an octagon26s = 25(3–2√2) = 4.28932+4.828461170−5.39e-01-12.569behindFound by Maurizio Morandi in July 2026.
L's in an octagon27s = 15(1–1/√2) = 4.39339+4.611055926−2.18e-01-4.954behindFound by Maurizio Morandi in July 2026.
L's in an octagon28s = 31(2–√2)/4 = 4.53984+4.694260845−1.54e-01-3.401behindFound by Maurizio Morandi in July 2026.
L's in an octagon29s = 11(√2–1) = 4.55634+5.178420005−6.22e-01-13.653behindFound by Maurizio Morandi in July 2026.
L's in an octagon30s = 11(√2–1) = 4.55634+5.649494197−1.0931-23.992behindFound by Maurizio Morandi in July 2026.
Octagons in a circle2r = √(13/4+2√2) = 2.46544+2.465446649−1.14e-08-0.000reproduced
Octagons in a circle3r = 2.71611+2.716111075−1.07e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Octagons in a circle4r = √(9/2+3√2) = 2.95679+2.956795711−3.19e-08-0.000reproduced
Octagons in a circle5r = 3.37974+3.379820258−8.03e-05-0.002behindFound by Jonathan Viquerat in June 2026.
Octagons in a circle6r = 3.69797+3.697970689−6.89e-07-0.000reproducedFound by Jonathan Viquerat in June 2026.
Octagons in a circle7r = 3.77329+3.773295999−6.00e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Octagons in a circle8r = 4.12460+4.124607953−7.95e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Octagons in a circle9r = 4.46088+4.460885628−5.63e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Octagons in a circle10r = 4.72215+4.734565567−1.24e-02-0.263behindFound by Jonathan Viquerat in June 2026.
Octagons in a circle11r = 4.88201+4.928760828−4.68e-02-0.958behindFound by Jonathan Viquerat in June 2026.
Octagons in a circle12r = 5.00001+5.012459081−1.24e-02-0.249behindFound by Jonathan Viquerat in June 2026.
Octagons in a circle13r = 5.23457+5.236575556−2.01e-03-0.038behindFound by Jonathan Viquerat in June 2026.
Octagons in a circle14r = 5.34130+5.342875543−1.58e-03-0.029behindFound by Haowei Lin in July 2026.
Octagons in a circle15r = 5.60687+5.667142634−6.03e-02-1.075behindFound by Jonathan Viquerat in June 2026.
Octagons in a circle16r = 5.73295+5.737432741−4.48e-03-0.078behindFound by Haowei Lin in July 2026.
Octagons in a circle17r = 5.94448+5.997766318−5.33e-02-0.896behindFound by Jonathan Viquerat in June 2026.
Octagons in a circle18r = 6.05966+6.061644054−1.98e-03-0.033behindFound by Haowei Lin in July 2026.
Octagons in a circle19r = 6.07328+6.113552674−4.03e-02-0.663behindFound by Jonathan Viquerat in June 2026.
Octagons in a circle20r = 6.36724+6.371636086−4.40e-03-0.069behindFound by Haowei Lin in July 2026.
Octagons in a circle21r = 6.48101+6.611823149−1.31e-01-2.018behindFound by Jonathan Viquerat in August 2026.
Octagons in a circle22r = 6.70466+6.728243837−2.36e-02-0.352behindFound by Jonathan Viquerat in August 2026.
Octagons in a circle23r = 6.85820+7.042142331−1.84e-01-2.682behindFound by Jonathan Viquerat in August 2026.
Octagons in a circle24r = 6.96998+7.246050265−2.76e-01-3.961behindFound by Jonathan Viquerat in August 2026.
Octagons in a circle25r = 7.12165+7.149872981−2.82e-02-0.396behindFound by Jonathan Viquerat in August 2026.
Octagons in a domino2s = 1 + √2 = 2.41421+2.414213563−9.66e-10-0.000reproduced
Octagons in a domino3s = 3.51366+3.513669803−9.80e-06-0.000reproducedFound by Aapo Lipponen in July 2026.
Octagons in a domino4s = 2 + 7√2/5 = 3.97989+3.979898989−1.59e-09-0.000reproducedFound by Aapo Lipponen in July 2026.
Octagons in a domino5s = 13/6 + 3/√2 = 4.28798+4.287987012−1.72e-09-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a domino6s = (16 + 11√2)/7 = 4.50804+4.508049886−1.80e-09-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a domino7s = 2 + 2√2 = 4.82842+4.828427207−8.20e-08-0.000reproduced
Octagons in a domino8s = 2 + 2√2 = 4.82842+4.828427127−2.05e-09-0.000reproduced
Octagons in a domino9s = 8/3 + 2√2 = 5.49509+5.498073907−2.98e-03-0.054behindFound by Jonathan Viquerat in May 2026.
Octagons in a domino10s = 3 + 2√2 = 5.82842+5.887046420−5.86e-02-1.006behindFound by Jonathan Viquerat in May 2026.
Octagons in a domino11s = 16/5 + 2√2 = 6.02842+6.028486462−5.93e-05-0.001behindFound by Jonathan Viquerat in May 2026.
Octagons in a domino12s = 6.31126+6.311649619−3.90e-04-0.006behindFound by Jonathan Viquerat in May 2026.
Octagons in a domino13s = 6.51128+6.564719387−5.34e-02-0.821behindFound by Aapo Lipponen in July 2026.
Octagons in a domino14s = (21 + 13√2)/6 = 6.56412+6.565255911−1.13e-03-0.017behindFound by Jonathan Viquerat in May 2026.
Octagons in a domino15s = (47 + 29√2)/13 = 6.77016+6.773696874−3.53e-03-0.052behindFound by Jonathan Viquerat in May 2026.
Octagons in a domino16s = 7.10456+7.203698308−9.91e-02-1.395behindFound by Jonathan Viquerat in May 2026.
Octagons in a domino17s = 3 + 3√2 = 7.24264+7.247614754−4.97e-03-0.069behind
Octagons in a domino18s = 3 + 3√2 = 7.24264+7.244382766−1.74e-03-0.024behind
Octagons in a domino19s = 7.77123+8.093879707−3.23e-01-4.152behindFound by Jonathan Viquerat in May 2026.
Octagons in a domino20s = 8.03947+8.163785164−1.24e-01-1.546behindFound by Jonathan Viquerat in May 2026.
Octagons in a domino21s = 8.21837+8.244426701−2.61e-02-0.317behindFound by Bhavithran Ananthan in July 2026.
Octagons in a domino22s = 8.34004+8.396834751−5.68e-02-0.681behindFound by Thomas Greenleaf in June 2026.
Octagons in a hexagon2s = 2.70289+2.702888728+1.27e-060.000reproduced
Octagons in a hexagon3s = 2.88958+2.889628768−4.88e-05-0.002behindFound by Mohamed Metwalli in June 2026.
Octagons in a hexagon4s = 11+8√2–16/√3–4√6 = 3.27814+3.278145237−1.64e-08-0.000reproducedFound by Mohamed Metwalli in June 2026.
Octagons in a hexagon5s = 3.71848+3.718485425−5.42e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Octagons in a hexagon6s = 3.94730+3.947306375−6.38e-06-0.000reproducedFound by Aristotle Papowitz in July 2026.
Octagons in a hexagon7s = 3.97716+3.977162459−2.46e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Octagons in a hexagon8s = 4.56653+4.566540151−1.02e-05-0.000behindFound by Jonathan Viquerat in June 2026.
Octagons in a hexagon9s = 4.93304+4.933045515−5.51e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Octagons in a hexagon10s = 5.06929+5.096117760−2.68e-02-0.529behindFound by Jonathan Viquerat in June 2026.
Octagons in a hexagon11s = 5.34796+5.377736880−2.98e-02-0.557behindFound by Bhavithran Ananthan in July 2026.
Octagons in a hexagon12s = 5.38669+5.404365212−1.77e-02-0.328behindFound by Jonathan Viquerat in June 2026.
Octagons in a hexagon13s = 5.75470+5.769627955−1.49e-02-0.259behindFound by Jonathan Viquerat in June 2026.
Octagons in a hexagon14s = 5.77752+5.789778162−1.23e-02-0.212behindFound by Jonathan Viquerat in June 2026.
Octagons in a hexagon15s = 6.13744+6.167523051−3.01e-02-0.490behindFound by Bhavithran Ananthan in June 2026.
Octagons in a hexagon16s = 6.21438+6.216000707−1.62e-03-0.026behindFound by Jonathan Viquerat in June 2026.
Octagons in a hexagon17s = 6.35725+6.435913850−7.87e-02-1.237behindFound by Jonathan Viquerat in June 2026.
Octagons in a hexagon18s = 6.42774+6.467107797−3.94e-02-0.612behindFound by Bhavithran Ananthan in July 2026.
Octagons in a hexagon19s = 6.44696+6.453901322−6.94e-03-0.108behindFound by Bhavithran Ananthan in July 2026.
Octagons in a hexagon20s = 6.99419+7.105167231−1.11e-01-1.587behindFound by Leo Strijbos in August 2026.
Octagons in a pentagon2s = 3.35605+3.356053089−3.09e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a pentagon3s = 3.74411+3.744125629−1.56e-05-0.000behindFound by Bhavithran Ananthan in May 2026.
Octagons in a pentagon4s = 4.10125+4.101259755−9.76e-06-0.000reproducedFound by Bhavithran Ananthan in July 2026.
Octagons in a pentagon5s = 4.33300+4.338166880−5.17e-03-0.119behindFound by Jonathan Viquerat in May 2026.
Octagons in a pentagon6s = 4.77007+4.770075637−5.64e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a pentagon7s = = 5.25544+5.255443053−3.05e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a pentagon8s = 5.61662+5.616625037−5.04e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a pentagon9s = 5.96580+5.966496329−6.96e-04-0.012behindFound by Jonathan Viquerat in May 2026.
Octagons in a pentagon10s = 6.28146+6.281467372−7.37e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a pentagon11s = 6.46576+6.477600748−1.18e-02-0.183behindFound by Jonathan Viquerat in May 2026.
Octagons in a pentagon12s = 6.71763+6.765336264−4.77e-02-0.710behindFound by Jonathan Viquerat in May 2026.
Octagons in a pentagon13s = 6.97061+7.006375605−3.58e-02-0.513behindFound by Aapo Lipponen in July 2026.
Octagons in a pentagon14s = 7.16083+7.164110941−3.28e-03-0.046behindFound by Jonathan Viquerat in May 2026.
Octagons in a pentagon16s = 7.61505+7.676917130−6.19e-02-0.812behindFound by Bhavithran Ananthan in June 2026.
Octagons in a pentagon17s = 7.91419+8.052589169−1.38e-01-1.749behindFound by Bhavithran Ananthan in July 2026.
Octagons in a pentagon18s = 8.12567+8.178768942−5.31e-02-0.653behindFound by Bhavithran Ananthan in June 2026.
Octagons in a pentagon19s = 8.34354+8.510419321−1.67e-01-2.000behindFound by Bhavithran Ananthan in July 2026.
Octagons in a pentagon20s = 8.54202+8.553474367−1.15e-02-0.134behindFound by Bhavithran Ananthan in July 2026.
Octagons in a pentagon21s = 8.74315+8.824920693−8.18e-02-0.935behindFound by Jonathan Viquerat in August 2026.
Octagons in a pentagon22s = 8.96230+9.041282801−7.90e-02-0.881behindFound by Jonathan Viquerat in August 2026.
Octagons in a pentagon23s = 9.11759+9.232124794−1.15e-01-1.256behindFound by Jonathan Viquerat in August 2026.
Octagons in a pentagon24s = 9.27761+9.635884297−3.58e-01-3.862behindFound by Jonathan Viquerat in August 2026.
Octagons in a pentagon25s = 9.45135+10.018740785−5.67e-01-6.003behindFound by Jonathan Viquerat in August 2026.
Octagons in a square2s = 2 + 3√2/2 = 4.12132+4.121320345−1.65e-09-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a square3s = 2 + 2√2 = 4.82842+4.828427127−1.93e-09-0.000reproduced
Octagons in a square4s = 2 + 2√2 = 4.82842+4.828427127−1.93e-09-0.000reproduced
Octagons in a square5s = 3 + 2√2 = 5.82842+5.828427127−2.33e-09-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a square6s = (11√2+17)/5 = 6.51126+6.511269959−1.22e-07-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a square7s = (5√2+7)/2 = 7.03553+7.035534036−1.30e-07-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a square8s = 3 + 3√2 = 7.24264+7.242640824−1.37e-07-0.000reproduced
Octagons in a square9s = 3 + 3√2 = 7.24264+7.242640744−5.67e-08-0.000reproduced
Octagons in a square10s = 4+3√2 = 8.24264+8.242665853−2.52e-05-0.000behindFound by Jonathan Viquerat in May 2026.
Octagons in a square11s = 8.57596+8.577141984−1.18e-03-0.014behindFound by Jonathan Viquerat in May 2026.
Octagons in a square12s = (23√2+38)/8 = 8.81586+8.815977529−1.14e-04-0.001behindFound by Jonathan Viquerat in May 2026.
Octagons in a square13s = 9.19909+9.224428004−2.53e-02-0.275behindFound by Jonathan Viquerat in May 2026.
Octagons in a square14s = (7√2+9)/2 = 9.44974+9.657003865−2.07e-01-2.193behindFound by Jonathan Viquerat in May 2026.
Octagons in a square15s = 4 + 4√2 = 9.65685+9.656968627−1.14e-04-0.001behindFound by Jonathan Viquerat in May 2026.
Octagons in a square16s = 4 + 4√2 = 9.65685+9.656883440−2.92e-05-0.000behindFound by Jonathan Viquerat in May 2026.
Octagons in a square17s = 10.44973+10.610969576−1.61e-01-1.543behindFound by Jonathan Viquerat in May 2026.
Octagons in a square18s = (17√2+29)/5 = 10.60832+10.610292298−1.97e-03-0.019behindFound by Jonathan Viquerat in May 2026.
Octagons in a square19s = 10.96620+11.138816867−1.73e-01-1.574behindFound by Haowei Lin in July 2026.
Octagons in a square20s = (39√2+67)/11 = 11.10493+11.476972302−3.72e-01-3.350behindFound by Jonathan Viquerat in May 2026.
Octagons in a square21s = 11.47891+11.500108152−2.12e-02-0.185behindFound by Grigory Merzon in August 2026.
Octagons in a square22s = 11.63403+12.409669645−7.76e-01-6.667behindFound by Grigory Merzon in August 2026.
Octagons in a tan2s = 3+2√2 = 5.82842+5.828427127−2.33e-09-0.000reproduced
Octagons in a tan3s = 3+5/√2 = 6.53553+6.535533909−2.61e-09-0.000reproduced
Octagons in a tan4s = 4+5/√2 = 7.53553+7.535533909−3.01e-09-0.000reproduced
Octagons in a tan5s = 9/2+3√2 = 8.74264+8.742640691−3.50e-09-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a tan6s = 4+7/√2 = 8.94974+8.949747472−3.58e-09-0.000reproduced
Octagons in a tan7s = 5+7/√2 = 9.94974+9.949747562−9.34e-08-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a tan8s = 10.65684+10.656854447−1.44e-05-0.000behindFound by Jonathan Viquerat in May 2026.
Octagons in a tan9s = 6+7/√2 = 10.94974+10.949748652−1.18e-06-0.000reproduced
Octagons in a tan10s = 5+9/√2 = 11.36396+11.363967850−6.82e-06-0.000reproduced
Octagons in a tan11s = 12.33328+12.363961265−3.07e-02-0.249behindFound by Jonathan Viquerat in May 2026.
Octagons in a tan12s = 12.65684+12.656858576−1.86e-05-0.000behindFound by Jonathan Viquerat in May 2026.
Octagons in a tan13s = 13.21750+13.294957513−7.75e-02-0.586behindFound by Jonathan Viquerat in May 2026.
Octagons in a tan14s = 13/2+5√2 = 13.57106+13.780657911−2.10e-01-1.544behindFound by Jonathan Viquerat in May 2026.
Octagons in a tan15s = 6+11/√2 = 13.77817+13.787705633−9.53e-03-0.069behind
Octagons in a tan16s = 8+9/√2 = 14.36396+14.615184590−2.51e-01-1.749behind
Octagons in a tan17s = 14.77816+14.781904433−3.74e-03-0.025behindFound by Jonathan Viquerat in May 2026.
Octagons in a tan18s = 15.34720+15.778446018−4.31e-01-2.810behindFound by Jonathan Viqueratl in May 2026.
Octagons in a tan19s = 15.68053+15.795375241−1.15e-01-0.732behindFound by Jonathan Viquerat in May 2026.
Octagons in a tan20s = 15/2+6√2 = 15.98528+16.781791848−7.97e-01-4.983behindFound by Jonathan Viquerat in May 2026.
Octagons in a tan21s = 7+13/√2 = 16.19238+16.951389811−7.59e-01-4.687behind
Octagons in a tan22s = 16.77817+17.002903802−2.25e-01-1.339behindFound by Thomas Greenleaf in June 2026.
Octagons in a triangle2s = 6.79962+6.799624261−4.26e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a triangle3s = (6+5√2+4√3+3√6)/4 = 6.83693+6.836935073−5.27e-09-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a triangle4s = 8.65211+8.652115620−5.62e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Octagons in a triangle5s = 9.28498+9.284990338−1.03e-05-0.000behindFound by Jonathan Viquerat in May 2026.
Octagons in a triangle6s = 9.31576+9.315773043−1.30e-05-0.000behindFound by Jonathan Viquerat in May 2026.
Octagons in a triangle7s = 11.06632+11.066335198−1.52e-05-0.000behindFound by Jonathan Viquerat in May 2026.
Octagons in a triangle8s = 11.51025+11.512147192−1.90e-03-0.016behindFound by Jonathan Viquerat in May 2026.
Octagons in a triangle9s = 11.72998+11.770509257−4.05e-02-0.346behind
Octagons in a triangle10s = 11.80642+11.807352390−9.32e-04-0.008behindFound by Jonathan Viquerat in May 2026.
Octagons in a triangle11s = 13.24689+13.247442287−5.52e-04-0.004behindFound by Jonathan Viquerat in May 2026.
Octagons in a triangle12s = 13.62032+13.621711162−1.39e-03-0.010behindFound by Bhavithran Ananthan in July 2026.
Octagons in a triangle13s = 14.04225+14.182097385−1.40e-01-0.996behindFound by Jonathan Viquerat in May 2026.
Octagons in a triangle14s = 14.23921+14.289454832−5.02e-02-0.353behindFound by Aristotle Papowitz in July 2026.
Octagons in a triangle15s = 14.28169+14.309446328−2.78e-02-0.194behindFound by Jonathan Viquerat in May 2026.
Octagons in a triangle16s = 15.66136+15.738897074−7.75e-02-0.495behindFound by Jonathan Viquerat in May 2026.
Octagons in a triangle17s = 16.06191+16.140799233−7.89e-02-0.491behindFound by Bhavithran Ananthan in July 2026.
Octagons in a triangle18s = 16.40979+16.603439127−1.94e-01-1.180behindFound by Aristotle Papowitz in July 2026.
Octagons in a triangle19s = 16.54447+16.732511980−1.88e-01-1.137behindFound by Timo Berthold et al in May 2026.
Octagons in a triangle20s = 16.74196+16.930929038−1.89e-01-1.129behindFound by Jonathan Viquerat in August 2026.
Octagons in a triangle21s = 16.78582+16.896627913−1.11e-01-0.660behindFound by Bhavithran Ananthan in July 2026.
Octagons in a triangle22s = 17.96238+18.443664205−4.81e-01-2.679behindFound by Bhavithran Ananthan in July 2026.
Octagons in a triangle23s = 18.39413+19.697624202−1.3035-7.086behindFound by Jonathan Viquerat in August 2026.
Octagons in a triangle24s = 18.55975+19.019579055−4.60e-01-2.478behindFound by Jonathan Viquerat in August 2026.
Octagons in a triangle25s = 18.94531+19.007902903−6.26e-02-0.330behindFound by Jonathan Viquerat in August 2026.
Octagons in an L2s = 1+√2 = 2.41421+2.414213563−9.66e-10-0.000reproduced
Octagons in an L3s = 1+√2 = 2.41421+2.414213563−9.66e-10-0.000reproduced
Octagons in an L4s = 3/2+5√2/4 = 3.26776+3.503437867−2.36e-01-7.212behindFound by Jonathan Viquerat in June 2026.
Octagons in an L7s = 2+3/√2 = 4.12132+4.154183088−3.29e-02-0.797behindFound by Jonathan Viquerat in June 2026.
Octagons in an L8s = 4.36459+4.364707537−1.18e-04-0.003behindFound by Jonathan Viquerat in June 2026.
Octagons in an L9s = 4.46274+4.648394064−1.86e-01-4.160behindFound by Jonathan Viquerat in June 2026.
Octagons in an L10s = 4.69035+4.690588521−2.39e-04-0.005behindFound by Jonathan Viquerat in June 2026.
Octagons in an L11s = 2+2√2 = 4.82842+4.828427929−8.04e-07-0.000reproduced
Octagons in an L12s = 2+2√2 = 4.82842+4.828427221−9.60e-08-0.000reproduced
Octagons in an L13s = 5.41620+5.416596716−3.97e-04-0.007behindFound by Jonathan Viquerat in June 2026.
Octagons in an L14s = 8/3+2√2 = 5.49509+5.834638278−3.40e-01-6.179behindFound by Jonathan Viquerat in June 2026.
Octagons in an L15s = 5.82002+5.906163545−8.61e-02-1.480behindFound by Haowei Lin in June 2026.
Octagons in an L16s = 5.93197+6.215628674−2.84e-01-4.782behindFound by Jonathan Viquerat in June 2026.
Octagons in an L17s = 6.10747+6.263507543−1.56e-01-2.555behindFound by Jonathan Viquerat in June 2026.
Octagons in an L18s = 6.25520+6.449509815−1.94e-01-3.106behindFound by Vasily (Kotomord) Stolbov in September 2026.
Octagons in an L19s = 6.39782+6.650854074−2.53e-01-3.955behindFound by Vasily (Kotomord) Stolbov in September 2026.
Octagons in an L20s = 6.51126+6.755644991−2.44e-01-3.753behindFound by Vasily (Kotomord) Stolbov in September 2026.
Octagons in an octagon2s = 22.000000001−8.00e-10-0.000reproduced
Octagons in an octagon3s = 5–2√2 = 2.17157+2.171572876−8.69e-10-0.000reproducedFound by Ignacio Vallejo in March 2026.
Octagons in an octagon4s = √(5+1/√2) = 2.38895+2.388955202−3.72e-08-0.000reproducedFound by Ignacio Vallejo in March 2026.
Octagons in an octagon5s = 2+1/√2 = 2.70710+2.707106825−4.40e-08-0.000reproducedFound by Ignacio Vallejo in March 2026.
Octagons in an octagon6s = 2.98894+2.994721402−5.78e-03-0.193behindFound by Nicolas Campailla in May 2026.
Octagons in an octagon7s = 33.000000001−1.44e-09-0.000reproduced
Octagons in an octagon8s = 3.27524+3.275244129−4.13e-06-0.000reproducedFound by Grant Mowry in May 2026.
Octagons in an octagon9s = 2+√2 = 3.41421+3.414213622−5.96e-08-0.000reproducedFound by Ignacio Vallejo in March 2026.
Octagons in an octagon10s = 3+1/√2 = 3.70710+3.707106847−6.59e-08-0.000reproducedFound by Ignacio Vallejo in March 2026.
Octagons in an octagon11s = 3.93256+3.976950185−4.44e-02-1.129behindFound by Timo Berthold et al in May 2026.
Octagons in an octagon12s = 44.000065406−6.54e-05-0.002behind
Octagons in an octagon13s = 7–2√2 = 4.17157+4.271396945−9.98e-02-2.393behindFound by Ignacio Vallejo in March 2026.
Octagons in an octagon14s = 4.28135+4.344300409−6.30e-02-1.470behindFound by Timo Berthold et al in May 2026.
Octagons in an octagon15s = 4.45584+4.535533999−7.97e-02-1.789behindFound by Timo Berthold et al in May 2026.
Octagons in an octagon16s = 4.59803+4.598845179−8.15e-04-0.018behindFound by Timo Berthold et al in May 2026.
Octagons in an octagon17s = 4.75690+4.760369313−3.47e-03-0.073behindFound by Timo Berthold et al in May 2026.
Octagons in an octagon18s = 4.85681+4.909739266−5.29e-02-1.090behindFound by Timo Berthold et al in May 2026.
Octagons in an octagon19s = 4.93550+4.940323666−4.82e-03-0.098behindFound by Timo Berthold et al in May 2026.
Octagons in an octagon20s = 5.06727+5.129586557−6.23e-02-1.230behindFound by Timo Berthold et al in May 2026.
Octagons in an octagon21s = 5.19695+5.263451608−6.65e-02-1.280behindFound by Timo Berthold et al in May 2026.
Octagons in an octagon22s = 5.35686+5.661324379−3.04e-01-5.684behindFound by Bhavithran Ananthan in July 2026.
Octagons in an octagon23s = 4+√2 = 5.41421+5.528321548−1.14e-01-2.108behindFound by Bhavithran Ananthan in July 2026.
Octagons in an octagon24s = 5.55414+5.745304526−1.91e-01-3.442behindFound by Bhavithran Ananthan in July 2026.
Octagons in an octagon25s = 5.65411+5.849996309−1.96e-01-3.464behindFound by Bhavithran Ananthan in July 2026.
Octagons in an octagon26s = 5.73828+5.761017158−2.27e-02-0.396behindFound by Bhavithran Ananthan in July 2026.
Octagons in an octagon27s = 5.81167+5.978187859−1.67e-01-2.865behindFound by Bhavithran Ananthan in July 2026.
Octagons in an octagon28s = 3+2√2 = 5.82842+5.911489381−8.31e-02-1.425behindFound by Ignacio Vallejo in March 2026.
Octagons in an octagon29s = 6.05649+6.396532603−3.40e-01-5.615behindFound by Bhavithran Ananthan in July 2026.
Octagons in an octagon30s = 6.15306+6.256289405−1.03e-01-1.678behindFound by Timo Berthold et al in May 2026.
Pentagons in a circle2r = √(5+2√5)/2 = 1.53884+1.538841777−8.58e-09-0.000reproduced
Pentagons in a circle3r = (1+√5)/2 = 1.61803+1.618033989−6.48e-10-0.000reproduced
Pentagons in a circle4r = 1.82971+1.829715501−5.50e-06-0.000reproducedFound by Jonathan Viquerat in April 2026.
Pentagons in a circle5r = 2.03271+2.032742950−3.29e-05-0.002behindFound by Jonathan Viquerat in April 2026.
Pentagons in a circle6r = √((25+11√5)/10) = 2.22703+2.227032761−3.20e-08-0.000reproducedFound by Jonathan Viquerat in April 2026.
Pentagons in a circle7r = 2.29470+2.294709904−9.90e-06-0.000reproducedFound by Jake Loyd in June 2026.
Pentagons in a circle8r = 2.48128+2.481280615−6.15e-07-0.000reproducedFound by Jonathan Viquerat in April 2026.
Pentagons in a circle9r = 2.70169+2.702506269−8.16e-04-0.030behindFound by Jake Loyd in June 2026.
Pentagons in a circle10r = 2.79768+2.817419929−1.97e-02-0.706behindFound by Jonathan Viquerat in April 2026.
Pentagons in a circle11r = 2.90171+2.923890003−2.22e-02-0.764behindFound by Jake Loyd in June 2026.
Pentagons in a circle12r = 3.01808+3.021129165−3.05e-03-0.101behindFound by Jake Loyd in June 2026.
Pentagons in a circle13r = 3.07768+3.095583921−1.79e-02-0.582behindFound by Jake Loyd in June 2026.
Pentagons in a circle14r = 3.23377+3.235792618−2.02e-03-0.063behindFound by Jonathan Viquerat in June 2026.
Pentagons in a circle15r = 3.33877+3.338774038−4.04e-06-0.000reproducedFound by Jake Loyd in June 2026.
Pentagons in a circle16r = 3.43657+3.554747630−1.18e-01-3.439behindFound by Jonathan Viquerat in April 2026.
Pentagons in a circle17r = 3.50888+3.512319087−3.44e-03-0.098behindFound by Jake Loyd in June 2026.
Pentagons in a circle18r = 3.61619+3.671250900−5.51e-02-1.523behindFound by Jake Loyd in June 2026.
Pentagons in a circle19r = 3.67189+3.828163953−1.56e-01-4.256behindFound by Jake Loyd in June 2026.
Pentagons in a circle20r = 3.80052+3.803935853−3.42e-03-0.090behindFound by Jake Loyd in June 2026.
Pentagons in a circle21r = 3.90693+4.077701577−1.71e-01-4.371behindFound by Haowei Lin in July 2026.
Pentagons in a circle22r = 3.99781+4.164726374−1.67e-01-4.175behindFound by Haowei Lin in July 2026.
Pentagons in a circle23r = 4.07193+4.232458169−1.61e-01-3.942behindFound by Haowei Lin in July 2026.
Pentagons in a circle24r = 4.12402+4.126817735−2.80e-03-0.068behindFound by Haowei Lin in July 2026.
Pentagons in a circle25r = 4.23945+4.248276858−8.83e-03-0.208behindFound by Jonathan Viquerat in August 2026.
Pentagons in a domino2s = 1.55460+1.554603919−3.92e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Pentagons in a domino3s = 2.10051+2.100514157−4.16e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Pentagons in a domino4s = 2.33739+2.337395572−5.57e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Pentagons in a domino5s = 2.47315+2.473151364−1.36e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Pentagons in a domino6s = 2.69228+2.692281362−1.36e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Pentagons in a domino7s = 2.91977+2.919770575−5.75e-07-0.000reproducedFound by Jonathan Viquerat in May 2026.
Pentagons in a domino8s = 3.07696+3.077676643−7.17e-04-0.023behindFound by Jonathan Viquerat in May 2026.
Pentagons in a domino9s = 3.33456+3.337244404−2.68e-03-0.081behindFound by Jonathan Viquerat in May 2026.
Pentagons in a domino10s = 3.51930+3.521467760−2.17e-03-0.062behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a domino11s = 3.61313+3.813880962−2.01e-01-5.556behindFound by Jonathan Viquerat in May 2026.
Pentagons in a domino12s = 3.74837+3.801336396−5.30e-02-1.413behindFound by Jonathan Viquerat in May 2026.
Pentagons in a domino13s = 3.88151+3.915549064−3.40e-02-0.877behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a domino14s = 3.92746+3.928896236−1.44e-03-0.037behindFound by Jonathan Viquerat in May 2026.
Pentagons in a domino15s = 4.11731+4.274427732−1.57e-01-3.816behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a domino16s = 4.27934+4.388397442−1.09e-01-2.548behindFound by Jonathan Viquerat in May 2026.
Pentagons in a domino17s = 4.38233+4.485243949−1.03e-01-2.348behindFound by Jonathan Viquerat in September 2026.
Pentagons in a domino18s = 4.54032+4.651376094−1.11e-01-2.446behindFound by Thomas Greenleaf in June 2026.
Pentagons in a domino19s = 4.67483+4.792826193−1.18e-01-2.524behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a domino20s = 4.79125+4.920634445−1.29e-01-2.700behindFound by Thomas Greenleaf in June 2026.
Pentagons in a domino21s = 4.87601+5.118345238−2.42e-01-4.970behindFound by Jonathan Viquerat in September 2026.
Pentagons in a domino22s = 4.93220+5.166009565−2.34e-01-4.740behindFound by Thomas Greenleaf in June 2026.
Pentagons in a domino23s = 5.01785+5.024373569−6.52e-03-0.130behindFound by Jonathan Viquerat in September 2026.
Pentagons in a domino24s = 5.07794+5.440361129−3.62e-01-7.137behindFound by Jonathan Viquerat in September 2026.
Pentagons in a domino25s = 5.22623+5.232913383−6.68e-03-0.128behindFound by Jonathan Viquerat in September 2026.
Pentagons in a hexagon2s = 1.53879+1.538841787−5.18e-05-0.003behind
Pentagons in a hexagon3s = 1.73240+1.732454637−5.46e-05-0.003behind
Pentagons in a hexagon4s = 1.97666+1.976689306−2.93e-05-0.001behindFound by Ethan Riddle in May 2026.
Pentagons in a hexagon5s = 2.21822+2.218267573−4.76e-05-0.002behindFound by Nicolas Campailla in May 2026.
Pentagons in a hexagon6s = 2.32293+2.322939333−9.33e-06-0.000reproducedFound by Bhavithran Ananthan in July 2026.
Pentagons in a hexagon7s = (2√5–1+√(15–6√5))/2 s = 2.36527+2.365272305−4.18e-08-0.000reproducedFound by Nicolas Campailla in May 2026.
Pentagons in a hexagon8s = 2.71922+2.719228626−8.63e-06-0.000reproducedFound by Bhavithran Ananthan in July 2026.
Pentagons in a hexagon9s = 2.86967+2.921189914−5.15e-02-1.795behindFound by Nicolas Campailla in May 2026.
Pentagons in a hexagon10s = 2.93664+2.938528126−1.89e-03-0.064behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a hexagon11s = 3.16125+3.176383439−1.51e-02-0.479behindFound by Jonathan Viquerat in May 2026.
Pentagons in a hexagon12s = 3.21458+3.220488333−5.91e-03-0.184behindFound by Jake Loyd in June 2026.
Pentagons in a hexagon13s = 3.40902+3.455629674−4.66e-02-1.367behindFound by Nicolas Campailla in August 2026.
Pentagons in a hexagon14s = 3.46643+3.469838856−3.41e-03-0.098behindFound by Jonathan Viquerat in May 2026.
Pentagons in a hexagon15s = 3.63499+3.666247359−3.13e-02-0.860behindFound by Jake Loyd in June 2026.
Pentagons in a hexagon16s = 3.69895+3.802266412−1.03e-01-2.793behindFound by Nicolas Campailla in August 2026.
Pentagons in a hexagon17s = 3.75774+3.845510368−8.78e-02-2.336behindFound by Jonathan Viquerat in May 2026.
Pentagons in a hexagon18s = 3.84479+3.872668630−2.79e-02-0.725behindFound by Jake Loyd in June 2026.
Pentagons in a hexagon19s = 3.88271+3.971076273−8.84e-02-2.276behindFound by Jonathan Viquerat in August 2026.
Pentagons in a hexagon20s = 4.14048+4.170694700−3.02e-02-0.730behindFound by Jake Loyd in June 2026.
Pentagons in a hexagon21s = 4.24003+4.394155309−1.54e-01-3.635behindFound by Jake Loyd in June 2026.
Pentagons in a hexagon22s = 4.32443+4.329422721−4.99e-03-0.115behindFound by Jake Loyd in June 2026.
Pentagons in a hexagon23s = 4.39703+4.564554224−1.68e-01-3.810behindFound by Jake Loyd in June 2026.
Pentagons in a hexagon24s = 4.46360+4.468493804−4.89e-03-0.110behindFound by Jake Loyd in June 2026.
Pentagons in a hexagon25s = 4.57861+4.590374896−1.18e-02-0.257behindFound by Jake Loyd in June 2026.
Pentagons in a hexagon26s = 4.66031+4.831126159−1.71e-01-3.665behindFound by Aristotle Papowitz in July 2026.
Pentagons in a hexagon27s = 4.71710+4.928822799−2.12e-01-4.488behindFound by Jonathan Viquerat in August 2026.
Pentagons in a hexagon28s = 4.84364+4.851745050−8.11e-03-0.167behindFound by Jonathan Viquerat in September 2026.
Pentagons in a hexagon29s = 4.91003+5.142652078−2.33e-01-4.738behindFound by Aristotle Papowitz in July 2026.
Pentagons in a hexagon30s = 4.96406+4.979695985−1.56e-02-0.315behindFound by Aristotle Papowitz in July 2026.
Pentagons in a hexagon31s = 5.09223+5.353584588−2.61e-01-5.132behindFound by Jonathan Viquerat in September 2026.
Pentagons in a pentagon2s = 22.000000001−8.00e-10-0.000reproduced
Pentagons in a pentagon3s = √5 = 2.23606+2.236067978−8.94e-10-0.000reproducedFound by Jonathan Viquerat in April 2026.
Pentagons in a pentagon4s = 2.44719+2.447213637−2.36e-05-0.001behindFound by Jonathan Viquerat in April 2026.
Pentagons in a pentagon5s = (3+√5)/2 = 2.61803+2.618034034−4.49e-08-0.000reproduced
Pentagons in a pentagon6s = (3+√5)/2 = 2.61803+2.618033997−7.92e-09-0.000reproduced
Pentagons in a pentagon7s = 3.07866+3.078689381−2.94e-05-0.001behindFound by Jonathan Viquerat in April 2026.
Pentagons in a pentagon8s = 3.33514+3.335174397−3.44e-05-0.001behindFound by Jonathan Viquerat in April 2026.
Pentagons in a pentagon9s = 3.44956+3.591143681−1.42e-01-4.104behindFound by Jonathan Viquerat in April 2026.
Pentagons in a pentagon10s = 3.68324+3.782754750−9.95e-02-2.702behindFound by Jonathan Viquerat in April 2026.
Pentagons in a pentagon11s = 3.79704+3.949599238−1.53e-01-4.018behindFound by Jonathan Viquerat in April 2026.
Pentagons in a pentagon12s = 3.96926+4.018778648−4.95e-02-1.248behindFound by Jonathan Viquerat in April 2026.
Pentagons in a pentagon13s = 4.06523+4.083045409−1.78e-02-0.438behindFound by Jonathan Viquerat in April 2026.
Pentagons in a pentagon14s = 4.21111+4.413638461−2.03e-01-4.809behindFound by Grant Mowry in May 2026.
Pentagons in a pentagon15s = 2+√5 = 4.23606+4.535311297−2.99e-01-7.064behind
Pentagons in a pentagon16s = 4.41636+4.794346619−3.78e-01-8.559behindFound by Jonathan Viquerat in April 2026.
Pentagons in a pentagon17s = 4.65536+4.764750648−1.09e-01-2.350behindFound by Jonathan Viquerat in August 2026.
Pentagons in a pentagon18s = 4.77541+4.978152073−2.03e-01-4.246behindFound by Jonathan Viquerat in April 2026.
Pentagons in a pentagon19s = 4.95267+4.956898662−4.23e-03-0.085behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a pentagon20s = 5.03404+5.369119309−3.35e-01-6.656behindFound by Jake Loyd in June 2026.
Pentagons in a pentagon21s = 5.15638+5.204611317−4.82e-02-0.935behindFound by Jake Loyd in June 2026.
Pentagons in a pentagon22s = 5.26645+5.589358256−3.23e-01-6.131behindFound by Grant Mowry in May 2026.
Pentagons in a pentagon23s = 5.34696+5.730275656−3.83e-01-7.169behindFound by Jake Loyd in June 2026.
Pentagons in a pentagon24s = 5.49109+5.842309001−3.51e-01-6.396behindFound by Jake Loyd in June 2026.
Pentagons in a pentagon25s = 5.58099+5.593813556−1.28e-02-0.230behindFound by Jake Loyd in June 2026.
Pentagons in a pentagon26s = 5.67207+5.922670948−2.51e-01-4.418behindFound by Jonathan Viquerat in August 2026.
Pentagons in a pentagon27s = 5.75528+6.061087462−3.06e-01-5.314behindFound by Jonathan Viquerat in August 2026.
Pentagons in a pentagon28s = 5.84493+5.979889677−1.35e-01-2.309behindFound by Jonathan Viquerat in August 2026.
Pentagons in a pentagon29s = 5.91835+6.341279340−4.23e-01-7.146behindFound by Jonathan Viquerat in August 2026.
Pentagons in a square2s = (1+√5)[√(250+110√5) – 5(1+√5)]/8 s = 2.46345+2.463451666−1.45e-08-0.000reproduced
Pentagons in a square3s = (4+5√5/2)√(5+2√5)–55/4–23√5/4 s = 2.90811+2.908117286−1.73e-09-0.000reproducedFound by Jonathan Viquerat in April 2026.
Pentagons in a square4s = ((3–√5)√(5–√5)+7√10+√2)/8 s = 3.10252+3.102525061−4.94e-08-0.000reproducedFound by Jonathan Viquerat in April 2026.
Pentagons in a square5s = 3.54903+3.549034820−4.82e-06-0.000reproducedFound by Jonathan Viquerat in April 2026.
Pentagons in a square6s = 3.88299+3.882991496−1.50e-06-0.000reproducedFound by Haowei Lin in July 2026.
Pentagons in a square7s = 4.18037+4.180370664−6.64e-07-0.000reproducedFound by Nicolas Campailla in May 2026.
Pentagons in a square8s = 4.38190+4.382209203−3.09e-04-0.007behindFound by Aristotle Papowitz in July 2026.
Pentagons in a square9s = 4.60033+4.600329612+3.88e-070.000reproducedFound by Jonathan Viquerat in April 2026.
Pentagons in a square10s = 4.90581+4.977249750−7.14e-02-1.456behindFound by Jonathan Viquerat in June 2026.
Pentagons in a square11s = 5.11555+5.170365461−5.48e-02-1.072behindFound by Jonathan Viquerat in August 2026.
Pentagons in a square12s = 5.23221+5.232214467−4.47e-06-0.000reproducedFound by Timo Berthold et al in May 2026.
Pentagons in a square13s = 5.52102+5.525524355−4.50e-03-0.082behindFound by Jake Loyd in June 2026.
Pentagons in a square14s = 5.69659+5.799064180−1.02e-01-1.799behindFound by Jake Loyd in June 2026.
Pentagons in a square15s = 5.90118+5.979706156−7.85e-02-1.331behindFound by Jonathan Viquerat in August 2026.
Pentagons in a square16s = 6.06452+6.179132659−1.15e-01-1.890behindFound by Timo Berthold et al in April 2026.
Pentagons in a square17s = 6.23761+6.302798703−6.52e-02-1.045behindFound by Jonathan Viquerat in June 2026.
Pentagons in a square18s = 6.32565+6.508455254−1.83e-01-2.890behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a square19s = 6.55781+6.572081506−1.43e-02-0.218behindFound by Jake Loyd in June 2026.
Pentagons in a square20s = 6.66135+6.976451811−3.15e-01-4.730behindFound by Haowei Lin in July 2026.
Pentagons in a square21s = 6.85368+7.064813207−2.11e-01-3.081behindFound by Jake Loyd in June 2026.
Pentagons in a square22s = 7.04445+7.465578915−4.21e-01-5.978behindFound by Haowei Lin in July 2026.
Pentagons in a square23s = 7.20624+7.234675610−2.84e-02-0.395behindFound by Jake Loyd in June 2026.
Pentagons in a square24s = 7.33690+7.624266977−2.87e-01-3.917behindFound by Jake Loyd in June 2026.
Pentagons in a square25s = 7.45360+7.482682945−2.91e-02-0.390behindFound by Jake Loyd in June 2026.
Pentagons in a square26s = 7.58176+8.115832817−5.34e-01-7.044behindFound by Jonathan Viquerat in August 2026.
Pentagons in a square27s = 7.67948+8.181873124−5.02e-01-6.542behindFound by Jonathan Viquerat in August 2026.
Pentagons in a square28s = 7.82010+8.371779231−5.52e-01-7.055behindFound by Jonathan Viquerat in August 2026.
Pentagons in a square29s = 7.98512+8.382051971−3.97e-01-4.971behindFound by Jonathan Viquerat in August 2026.
Pentagons in a square30s = 8.10222+8.712424872−6.10e-01-7.531behindFound by Jonathan Viquerat in August 2026.
Pentagons in a tan2s = 3.52014+3.520147023−7.02e-06-0.000reproduced
Pentagons in a tan3s = 3.97792+3.977926918−6.92e-06-0.000reproduced
Pentagons in a tan4s = 4.63338+4.633390129−1.01e-05-0.000behindFound by Jonathan Viquerat in May 2026.
Pentagons in a tan5s = 5.16518+5.165184087−4.09e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Pentagons in a tan6s = 5.48233+5.482338720−8.72e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Pentagons in a tan7s = 6.03679+6.072389297−3.56e-02-0.590behindFound by Jonathan Viquerat in May 2026.
Pentagons in a tan8s = 6.30671+6.342233331−3.55e-02-0.563behindFound by Jonathan Viquerat in May 2026.
Pentagons in a tan9s = 6.69536+6.730541813−3.52e-02-0.525behindFound by Jonathan Viquerat in May 2026.
Pentagons in a tan10s = 6.98078+6.986535249−5.76e-03-0.082behindFound by Jonathan Viquerat in May 2026.
Pentagons in a tan11s = 7.34729+7.356668434−9.38e-03-0.128behindFound by Jonathan Viquerat in May 2026.
Pentagons in a tan12s = 7.54006+7.730059944−1.90e-01-2.520behindFound by Jonathan Viquerat in May 2026.
Pentagons in a tan13s = 7.82906+7.952175499−1.23e-01-1.573behindFound by Jonathan Viquerat in May 2026.
Pentagons in a tan14s = 8.16828+8.177480758−9.20e-03-0.113behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a tan15s = 8.45706+8.529294504−7.22e-02-0.854behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a tan16s = 8.66023+8.805006366−1.45e-01-1.672behindFound by Jonathan Viquerat in May 2026.
Pentagons in a tan17s = 8.89679+8.910664637−1.39e-02-0.156behindFound by Jonathan Viquerat in September 2026.
Pentagons in a tan18s = 9.08713+9.402519728−3.15e-01-3.471behindFound by Jonathan Viqueratl in May 2026.
Pentagons in a tan19s = 9.38489+9.959806374−5.75e-01-6.126behindFound by Thomas Greenleaf in June 2026.
Pentagons in a tan20s = 9.61296+9.660614931−4.77e-02-0.496behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a tan21s = 9.79121+10.557804803−7.67e-01-7.829behindFound by Jonathan Viquerat in September 2026.
Pentagons in a tan22s = 10.01063+10.558520468−5.48e-01-5.473behindFound by Jonathan Viquerat in September 2026.
Pentagons in a tan23s = 10.24859+10.868894011−6.20e-01-6.053behindFound by Jonathan Viquerat in September 2026.
Pentagons in a tan24s = 10.45171+11.218786936−7.67e-01-7.339behindFound by Jonathan Viquerat in September 2026.
Pentagons in a tan25s = 10.63197+11.422741332−7.91e-01-7.438behindFound by Jonathan Viquerat in September 2026.
Pentagons in a triangle3s = √((75+33√5)/8) – (3–√5)/4 = 4.12164+4.121647331−1.75e-09-0.000reproducedFound by Jonathan Viquerat in May 2026.
Pentagons in a triangle4s = 5.21983+5.219832877−2.88e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Pentagons in a triangle5s = 5.55809+5.558094107−4.11e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Pentagons in a triangle6s = 5.63540+5.635408351−8.35e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Pentagons in a triangle7s = 6.50034+6.500348494−8.49e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Pentagons in a triangle8s = 6.81133+6.811339286−9.29e-06-0.000reproducedFound by Bhavithran Ananthan in July 2026.
Pentagons in a triangle9s = 7.08969+7.133094454−4.34e-02-0.612behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a triangle10s = 7.17235+7.172357541−7.54e-06-0.000reproducedFound by Bhavithran Ananthan in July 2026.
Pentagons in a triangle11s = 7.93748+7.959054849−2.16e-02-0.272behindFound by Jonathan Viquerat in May 2026.
Pentagons in a triangle12s = 8.19117+8.474290825−2.83e-01-3.456behindFound by Jonathan Viquerat in May 2026.
Pentagons in a triangle13s = 8.37807+8.380000536−1.93e-03-0.023behindFound by Jonathan Viquerat in May 2026.
Pentagons in a triangle14s = 8.58917+8.642812245−5.36e-02-0.625behindFound by Haowei Lin in July 2026.
Pentagons in a triangle15s = 8.69161+8.712795504−2.12e-02-0.244behindFound by Jake Loyd in June 2026.
Pentagons in a triangle16s = 9.29700+9.438377123−1.41e-01-1.521behindFound by Haowei Lin in July 2026.
Pentagons in a triangle17s = 9.57797+9.848759925−2.71e-01-2.827behindFound by Jake Loyd in June 2026.
Pentagons in a triangle18s = 9.78077+9.798076145−1.73e-02-0.177behindFound by Jake Loyd in June 2026.
Pentagons in a triangle19s = 9.92567+10.272642989−3.47e-01-3.496behindFound by Haowei Lin in July 2026.
Pentagons in a triangle20s = 10.09879+10.131722981−3.29e-02-0.326behindFound by Jake Loyd in June 2026.
Pentagons in a triangle21s = 10.17148+10.421273096−2.50e-01-2.456behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a triangle22s = 10.75818+10.802112923−4.39e-02-0.408behindFound by Jake Loyd in June 2026.
Pentagons in a triangle23s = 10.99100+11.079288515−8.83e-02-0.803behindFound by Jake Loyd in June 2026.
Pentagons in a triangle24s = 11.17511+11.538972758−3.64e-01-3.256behindFound by Jake Loyd in June 2026.
Pentagons in a triangle25s = 11.32392+11.868875419−5.45e-01-4.812behindFound by Jake Loyd in June 2026.
Pentagons in a triangle26s = 11.45549+11.833966172−3.78e-01-3.304behindFound by Aristotle Papowitz in July 2026.
Pentagons in a triangle27s = 11.59873+11.944451168−3.46e-01-2.981behindFound by Jonathan Viquerat in August 2026.
Pentagons in a triangle28s = 11.69225+11.738971435−4.67e-02-0.400behindFound by Jonathan Viquerat in August 2026.
Pentagons in a triangle29s = 12.18197+12.796734826−6.15e-01-5.047behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a triangle30s = 12.38240+12.942428416−5.60e-01-4.523behindFound by Yue Huang in August 2026.
Pentagons in a triangle31s = 12.58207+12.654142762−7.21e-02-0.573behindFound by Jonathan Viquerat in August 2026.
Pentagons in a triangle32s = 12.70492+13.130599833−4.26e-01-3.351behindFound by Yue Huang in August 2026.
Pentagons in a triangle33s = 12.85985+12.963576055−1.04e-01-0.807behindFound by Yue Huang in August 2026.
Pentagons in a triangle34s = 12.97563+13.064453441−8.88e-02-0.685behindFound by Yue Huang in August 2026.
Pentagons in a triangle35s = 13.10941+13.170252389−6.08e-02-0.464behindFound by Bhavithran Ananthan in July 2026.
Pentagons in a triangle36s = 13.17841++13.230130086−5.17e-02-0.392behindFound by Yue Huang in August 2026.
Pentagons in a triangle37s = 13.63430+13.741194009−1.07e-01-0.784behindFound by Yue Huang in August 2026.
Pentagons in a triangle38s = 13.82313+13.929125129−1.06e-01-0.767behindFound by Yue Huang in August 2026.
Pentagons in a triangle39s = 13.97521+14.116620361−1.41e-01-1.012behindFound by Yue Huang in August 2026.
Pentagons in a triangle40s = 14.13674+14.246617265−1.10e-01-0.777behindFound by Yue Huang in August 2026.
Pentagons in an L2s = √(5+2√5)/2 = 1.53884+1.538841769−6.16e-10-0.000reproduced
Pentagons in an L3s = 1.55425+1.554247558+2.44e-060.000reproducedFound by Jonathan Viquerat in June 2026.
Pentagons in an L4s = 1.96918+1.969181031−1.03e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Pentagons in an L5s = 2.12433+2.124337268−7.27e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Pentagons in an L6s = 2.30512+2.305121415−1.42e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Pentagons in an L7s = 2.41732+2.512760188−9.54e-02-3.948behindFound by Jonathan Viquerat in June 2026.
Pentagons in an L8s = 2.54164+2.579041095−3.74e-02-1.472behindFound by Jonathan Viquerat in June 2026.
Pentagons in an L9s = 2.67860+2.681223410−2.62e-03-0.098behindFound by Jonathan Viquerat in June 2026.
Pentagons in an L10s = 2.80245+2.869649395−6.72e-02-2.398behind
Pentagons in an L11s = 2.94662+2.949422497−2.80e-03-0.095behindFound by Jonathan Viquerat in June 2026.
Pentagons in an L12s = 3.07460+3.089182762−1.46e-02-0.474behindFound by Jonathan Viquerat in June 2026.
Pentagons in an L13s = 3.22359+3.255494293−3.19e-02-0.990behindFound by Jonathan Viquerat in September 2026.
Pentagons in an L14s = 3.35014+3.385781451−3.56e-02-1.064behindFound by Jonathan Viquerat in June 2026.
Pentagons in an L15s = 3.46668+3.619897935−1.53e-01-4.420behindFound by Jonathan Viquerat in September 2026.
Pentagons in an L16s = 3.55643+3.614731007−5.83e-02-1.639behindFound by Jonathan Viquerat in September 2026.
Pentagons in an L17s = 3.61458+3.713293496−9.87e-02-2.731behindFound by Jonathan Viquerat in September 2026.
Pentagons in an L18s = 3.73452+3.878828293−1.44e-01-3.864behindFound by Jonathan Viquerat in September 2026.
Pentagons in an L19s = 3.81113+3.898183102−8.71e-02-2.284behindFound by Jonathan Viquerat in June 2026.
Pentagons in an L20s = 3.86901+4.064649032−1.96e-01-5.057behindFound by Jonathan Viquerat in June 2026.
Pentagons in an L21s = 3.95816+4.274526969−3.16e-01-7.993behindFound by Jonathan Viquerat in September 2026.
Pentagons in an L22s = 4.02153+4.366930635−3.45e-01-8.589behindFound by Jonathan Viquerat in September 2026.
Pentagons in an L23s = 4.13155+4.437208953−3.06e-01-7.398behindFound by Jonathan Viquerat in September 2026.
Pentagons in an L24s = 4.22847+4.505371177−2.77e-01-6.548behindFound by Jonathan Viquerat in September 2026.
Pentagons in an octagon2s = 1.17774+1.177778520−3.85e-05-0.003behind
Pentagons in an octagon3s = 1.28954+1.289544405−4.40e-06-0.000reproducedFound by Nicolas Campailla in May 2026.
Pentagons in an octagon4s = 1.42986+1.429889753−2.98e-05-0.002behind
Pentagons in an octagon5s = 1.61756+1.617560353−3.53e-07-0.000reproducedFound by Nicolas Campailla in May 2026.
Pentagons in an octagon6s = 1.78003+1.788113221−8.08e-03-0.454behindFound by Nicolas Campailla in May 2026.
Pentagons in an octagon7s = 1.82343+1.823439320−9.32e-06-0.001reproducedFound by Timo Berthold et al in May 2026.
Pentagons in an octagon8s = 1.95989+1.959891558−1.56e-06-0.000reproducedFound by Nicolas Campailla in May 2026.
Pentagons in an octagon9s = (√5+√(5+√5))/√(10–2√5) s = 2.09517+2.095179356−3.44e-08-0.000reproducedFound by Nicolas Campailla in May 2026.
Pentagons in an octagon10s = 2.21135+2.235582981−2.42e-02-1.096behindFound by Timo Berthold et al in May 2026.
Pentagons in an octagon11s = 2.33111+2.335338641−4.23e-03-0.181behindFound by Timo Berthold et al in May 2026.
Pentagons in an octagon12s = 2.39327+2.395332140−2.06e-03-0.086behindFound by Timo Berthold et al in May 2026.
Pentagons in an octagon13s = 2.49776+2.538265310−4.05e-02-1.622behindFound by Jake Loyd in June 2026.
Pentagons in an octagon14s = 2.56564+2.612459706−4.68e-02-1.825behindFound by Jake Loyd in June 2026.
Pentagons in an octagon15s = 2.68123+2.689060999−7.83e-03-0.292behindFound by Timo Berthold et al in May 2026.
Pentagons in an octagon16s = 2.75249+2.757023771−4.53e-03-0.165behindFound by Jake Loyd in June 2026.
Pentagons in an octagon17s = 2.81043+2.836431575−2.60e-02-0.925behindFound by Jake Loyd in June 2026.
Pentagons in an octagon18s = 2.89321+2.940975509−4.78e-02-1.651behindFound by Jake Loyd in June 2026.
Pentagons in an octagon19s = 2.95527+3.064955961−1.10e-01-3.712behindFound by Jake Loyd in June 2026.
Pentagons in an octagon20s = 3.04679+3.233707767−1.87e-01-6.135behindFound by Jake Loyd in June 2026.
Pentagons in an octagon21s = 3.11874+3.131416581−1.27e-02-0.406behindFound by Jake Loyd in June 2026.
Pentagons in an octagon22s = 3.19144+3.298788548−1.07e-01-3.364behindFound by Jake Loyd in June 2026.
Pentagons in an octagon23s = 3.25129+3.261623304−1.03e-02-0.318behindFound by Jake Loyd in June 2026.
Pentagons in an octagon24s = 3.28718+3.414822051−1.28e-01-3.883behindFound by Jake Loyd in June 2026.
Pentagons in an octagon25s = 3.36617+3.561583244−1.95e-01-5.805behindFound by Jake Loyd in June 2026.
Pentagons in an octagon26s = 3.42775+3.455472117−2.77e-02-0.809behindFound by Jake Loyd in June 2026.
Pentagons in an octagon27s = 3.49942+3.679609860−1.80e-01-5.149behindFound by Bhavithran Ananthan in July 2026.
Pentagons in an octagon28s = 3.56402+3.581872376−1.79e-02-0.501behindFound by Bhavithran Ananthan in July 2026.
Pentagons in an octagon29s = 3.61848+3.830801164−2.12e-01-5.868behindFound by Bhavithran Ananthan in July 2026.
Pentagons in an octagon30s = 3.66678+3.681375358−1.46e-02-0.398behindFound by Aristotle Papowitz in July 2026.
Pentagons in an octagon31s = 3.74379+3.771373700−2.76e-02-0.737behindFound by Bhavithran Ananthan in July 2026.
Squares in a circle3r = 5 √17 / 16 = 1.288+1.288470527−1.89e-08-0.000reproducedFound by Erich Friedman in 1997.
Squares in a circle5r = √10 / 2 = 1.581+1.581138853−2.24e-08-0.000reproducedFound by Erich Friedman in 1997.
Squares in a circle6r = 1.688+*1.688542998−5.43e-04-0.032reproducedFound by Erich Friedman in 1997.
Squares in a circle7r = √13 / 2 = 1.802+1.802775669−3.12e-08-0.000reproducedFound by Erich Friedman in 1997.
Squares in a circle8r = 1.978+*1.978770990−7.71e-04-0.039reproducedFound by David W. Cantrell in March 2002.
Squares in a circle9r = √1105 / 16 = 2.077+2.079104956−1.51e-03-0.073behindFound by Erich Friedman in 1997.
Squares in a circle10r = 3 √2 / 2 = 2.121+2.208294872−8.70e-02-4.101behindFound by Erich Friedman in 1997.
Squares in a circle11r = 2.21386+2.243802098−2.99e-02-1.352behindFound by Milan Kovacic in May 2006.
Squares in a circle12r = √5 = 2.236+2.236690869−6.23e-04-0.028reproducedFound by Erich Friedman in 1997.
Squares in a circle13r = 2.3607+2.362340660−1.64e-03-0.069behindFound by David W. Cantrell in November 2010.
Squares in a circle14r = 2.52.508088662−8.09e-03-0.324reproducedFound by Erich Friedman in 1997.
Squares in a circle15r = 2.533+2.674964623−1.42e-01-5.605behindFound by by David W. Cantrell in June 2002.
Squares in a circle16r = √11009 / 40 = 2.623+2.698932546−7.58e-02-2.891behindFound by Erich Friedman in 1997.
Squares in a circle17r = 2.67687+2.851896469−1.75e-01-6.538behindFound by Milan Kovacic in May 2026.
Squares in a circle18r = √481 / 8 = 2.741+2.834176924−9.27e-02-3.382behindFound by David W. Cantrell in March 2002.
Squares in a circle19r = 2.80150+2.921035406−1.20e-01-4.267behindFound by Milan Kovacic in May 2026.
Squares in a circle20r = 2.893+2.937398150−4.44e-02-1.535behindFound by David W. Cantrell in June 2002.
Squares in a circle21r = √34 / 2 = 2.915+2.933307701−1.78e-02-0.612behindFound by Erich Friedman in 1997.
Squares in a circle22r = 3.03239+3.050244380−1.79e-02-0.589behindFound by Haowei Lin in July 2026.
Squares in a circle23r = 3.06738+3.074670953−7.29e-03-0.238behindFound by Milan Kovacic in May 2026.
Squares in a circle24r = 3.10940+3.164020371−5.46e-02-1.757behindFound by Milan Kovacic in May 2026.
Squares in a circle25r = 3.17450+3.197204146−2.27e-02-0.715behindFound by Haowei Lin in July 2026.
Squares in a circle26r = √41 / 2 = 3.201+3.361567769−1.60e-01-4.999behindFound by Erich Friedman in 1997.
Squares in a circle27r = 3.26050+3.262403219−1.90e-03-0.058behindFound by Milan Kovacic in May 2026.
Squares in a circle28r = 3.33147+3.349314484−1.78e-02-0.536behindFound by Milan Kovacic in May 2026.
Squares in a circle29r = 3.39309+3.548800615−1.56e-01-4.589behindFound by Milan Kovacic in May 2026.
Squares in a circle30r = 3.45962+3.552473988−9.29e-02-2.684behindFound by Milan Kovacic in May 2026.
Squares in a circle31r = 3.52771+3.628973122−1.01e-01-2.871behindFound by Haowei Lin in July 2026.
Squares in a circle32r = 3.57340+3.618317444−4.49e-02-1.257behindFound by Milan Kovacic in May 2026.
Squares in a circle33r = 3.60010+3.622540437−2.24e-02-0.623behindFound by Haowei Lin in July 2026.
Squares in a circle34r = 3.62911+3.775070338−1.46e-01-4.022behindFound by Jonathan Viquerat in August 2026.
Squares in a circle35r = √53 / 2 = 3.640+3.730446391−9.04e-02-2.483behindFound by David Eppstein in March 2002.
Squares in a domino2s = 11.000000000−4.00e-10-0.000reproduced
Squares in a domino3s = 3/2 = 1.51.500000017−1.69e-08-0.000reproduced
Squares in a domino4s = 1.930+1.930283341−2.83e-04-0.015reproducedFound by Evert Stenlund in June 2010.
Squares in a domino5s = 22.000000001−8.00e-10-0.000reproduced
Squares in a domino6s = 22.000000001−8.00e-10-0.000reproduced
Squares in a domino7s = 22.000000001−8.00e-10-0.000reproduced
Squares in a domino8s = 22.000000001−8.95e-10-0.000reproduced
Squares in a domino9s = 2 + √2/3 = 2.471+2.471404565−4.42e-08-0.000reproducedFound by Evert Stenlund in June 2010.
Squares in a domino10s = 5/2 = 2.52.500000340−3.40e-07-0.000reproduced
Squares in a domino11s = 2.779+2.845948096−6.69e-02-2.409behindFound by Evert Stenlund in June 2010.
Squares in a domino12s = 6 (1 + √2) / 5 = 2.897+2.943862560−4.68e-02-1.616behindFound by Maurizio Morandi in June 2010.
Squares in a domino13s = 2.976+3.000012683−2.40e-02-0.807behindFound by David W. Cantrell in July 2012.
Squares in a domino14s = 33.000004058−4.06e-06-0.000behind
Squares in a domino15s = 33.000000055−5.46e-08-0.000reproduced
Squares in a domino16s = 33.007466940−7.47e-03-0.249behind
Squares in a domino17s = 33.000021618−2.16e-05-0.001behind
Squares in a domino18s = 33.053333806−5.33e-02-1.778behind
Squares in a domino19s = 3 + 1/√5 = 3.447+3.504699774−5.75e-02-1.668behindFound by Maurizio Morandi in June 2010.
Squares in a domino20s = 7/2 = 3.53.506880725−6.88e-03-0.197reproduced
Squares in a domino21s = 7/2 = 3.53.506959679−6.96e-03-0.199reproduced
Squares in a domino22s = 3.745+3.805191378−6.02e-02-1.607behindFound by David W. Cantrell in July 2012.
Squares in a domino23s = 3.83525+3.910560051−7.53e-02-1.964behindFound by Thomas Greenleaf in June 2026.
Squares in a domino24s = 3.88184+4.000578016−1.19e-01-3.059behindFound by Aapo Lipponen in July 2026.
Squares in a domino25s = 3.939+4.002666377−6.37e-02-1.616behindFound by David W. Cantrell in August 2012.
Squares in a domino26s = 3.98019+4.019494300−3.93e-02-0.987behindFound by Aapo Lipponen in July 2026.
Squares in a domino27s = 44.016261631−1.63e-02-0.407behind
Squares in a domino28s = 44.004711863−4.71e-03-0.118behind
Squares in a domino29s = 44.023727153−2.37e-02-0.593behind
Squares in a domino30s = 44.048340589−4.83e-02-1.209behind
Squares in a domino31s = 44.039337974−3.93e-02-0.983behind
Squares in a domino32s = 44.041595169−4.16e-02-1.040behind
Squares in a domino33s = 3 + √2 = 4.414+4.506072614−9.19e-02-2.081behindFound by Maurizio Morandi in July 2012.
Squares in a domino34s = 4 + √2/3 = 4.471+4.500855727−2.95e-02-0.659behindFound by David W. Cantrell in July 2012.
Squares in a domino35s = 9/2 = 4.54.501648003−1.65e-03-0.037reproduced
Squares in a domino36s = 9/2 = 4.54.502418193−2.42e-03-0.054reproduced
Squares in a domino37s = 4.71758+4.816440323−9.89e-02-2.096behindFound by Aapo Lipponen in July 2026.
Squares in a domino38s = 4.79816+4.952417596−1.54e-01-3.215behind
Squares in a domino39s = 4.83693+4.953563013−1.17e-01-2.411behindFound by Aapo Lipponen in July 2026.
Squares in a domino40s = 4.895+4.987389614−9.24e-02-1.887behindFound by Sigvart Brendberg in June 2023.
Squares in a domino41s = 4.927+5.001019688−7.40e-02-1.502behindFound by Sigvart Brendberg in June 2023.
Squares in a domino42s = 4.96862+5.001211664−3.26e-02-0.656behindFound by Aapo Lipponen in July 2026.
Squares in a domino43s = 55.004886610−4.89e-03-0.098behind
Squares in a domino44s = 55.006809839−6.81e-03-0.136behind
Squares in a domino45s = 55.002525087−2.53e-03-0.051behind
Squares in a domino46s = 55.037433540−3.74e-02-0.749behind
Squares in a domino47s = 55.005194946−5.19e-03-0.104behind
Squares in a domino48s = 55.052985839−5.30e-02-1.060behind
Squares in a domino49s = 55.003600396−3.60e-03-0.072behind
Squares in a domino50s = 55.004550937−4.55e-03-0.091behind
Squares in a hexagon2s = 2/√3 = 1.15470+1.154700539−4.62e-10-0.000reproduced
Squares in a hexagon3s = (1+√3)/2 = 1.36602+1.366025431−2.72e-08-0.000reproducedFound by Maurizio Morandi in March 2026.
Squares in a hexagon4s = 2/3^(1/4) = 1.51967+1.519671396−2.47e-08-0.000reproducedFound by Maurizio Morandi in March 2026.
Squares in a hexagon5s = √3 = 1.73205+1.732053054−2.25e-06-0.000reproduced
Squares in a hexagon6s = 1.821+1.839593818−1.86e-02-1.021behindFound by Maurizio Morandi in March 2026.
Squares in a hexagon7s = (√2)3^(1/4) = 1.86120+1.863316067−2.11e-03-0.113behindFound by Maurizio Morandi in March 2026.
Squares in a hexagon8s = 2.15378+2.154700883−9.21e-04-0.043behindFound by Ian Watson in April 2026.
Squares in a hexagon9s = 1/2+√3 = 2.23205+2.273624338−4.16e-02-1.863behindFound by Jonathan Viquerat in April 2026.
Squares in a hexagon10s = 4/√3 = 2.30940+2.341434785−3.20e-02-1.387behind
Squares in a hexagon11s = 2.40944+2.415429026−5.99e-03-0.249behindFound by Jonathan Viquerat in April 2026.
Squares in a hexagon12s = 1+5√3/6 = 2.44337+2.491391926−4.80e-02-1.965behindFound by Maurizio Morandi in March 2026.
Squares in a hexagon13s = 2.572+2.612174538−4.02e-02-1.562behindFound by Maurizio Morandi in April 2026.
Squares in a hexagon14s = 2.62126+2.720280630−9.90e-02-3.778behindFound by Jonathan Viquerat in April 2026.
Squares in a hexagon15s = 2.75364+2.798884748−4.52e-02-1.643behindFound by Grant Mowry in May 2026.
Squares in a hexagon16s = 2.82002+2.822293530−2.27e-03-0.081behindFound by Spencer Leach in May 2026.
Squares in a hexagon17s = 2.87264+2.945932570−7.33e-02-2.551behindFound by Jake Loyd in May 2026.
Squares in a hexagon18s = 2.92104+2.926935777−5.90e-03-0.202behindFound by Haowei Lin in July 2026.
Squares in a hexagon19s = 2.93508+3.105415123−1.70e-01-5.803behindFound by Haowei Lin in July 2026.
Squares in a hexagon20s = 3.16122+3.185909144−2.47e-02-0.781behindFound by Leo Strijbos in August 2026.
Squares in a hexagon21s = (23+11√3)/13 = 3.23481+3.272925862−3.81e-02-1.178behindFound by Spencer Leach in May 2026.
Squares in a hexagon22s = 3.31432+3.332971092−1.87e-02-0.563behindFound by Jake Loyd in June 2026.
Squares in a hexagon23s = 3.36407+3.468317961−1.04e-01-3.099behindFound by Jake Loyd in June 2026.
Squares in a hexagon24s = 3.40286+3.434238926−3.14e-02-0.922behindFound by Thomas Greenleaf in June 2026.
Squares in a hexagon25s = 2√3 = 3.46410+3.626214420−1.62e-01-4.680behind
Squares in a hexagon26s = 3.49276+3.546696498−5.39e-02-1.544behindFound by Jake Loyd in June 2026.
Squares in a hexagon27s = (9+7√3)/6 = 3.52072+3.578408745−5.77e-02-1.638behindFound by Erich Friedman in April 2026.
Squares in a hexagon28s = 3.61976+3.744904643−1.25e-01-3.457behindFound by Leo Strijbos in August 2026.
Squares in a hexagon29s = 3.66437+3.833321505−1.69e-01-4.611behindFound by Ian Watson in April 2026.
Squares in a hexagon30s = 3.69552+3.940992365−2.45e-01-6.642behindFound by Aristotle Papowitz in July 2026.
Squares in a hexagon31s = 3.78143+3.808666109−2.72e-02-0.720behindFound by Jake Loyd in June 2026.
Squares in a hexagon32s = 3.84140+4.051050663−2.10e-01-5.458behindFound by Jake Loyd in June 2026.
Squares in a hexagon33s = 3.86634+3.966166152−9.98e-02-2.582behindFound by Jake Loyd in June 2026.
Squares in a hexagon34s = 3.91853+4.043168726−1.25e-01-3.181behindFound by Jake Loyd in June 2026.
Squares in a hexagon35s = 3.98201+4.048565765−6.66e-02-1.671behindFound by Jake Loyd in June 2026.
Squares in a hexagon36s = 4.02042+4.042818709−2.24e-02-0.557behindFound by Jake Loyd in June 2026.
Squares in a hexagon37s = 7/√3 = 4.04145+4.088343479−4.69e-02-1.160behind
Squares in a hexagon38s = 4.18035+4.209068140−2.87e-02-0.687behindFound by Leo Strijbos in August 2026.
Squares in a hexagon39s = 4.24512+4.298510400−5.34e-02-1.258behindFound by Jake Loyd in June 2026.
Squares in a hexagon40s = 4.30171+4.352847644−5.11e-02-1.189behindFound by Aristotle Papowitz in July 2026.
Squares in a pentagon2s = 4√(1–2/√5)+√5–2 s = 1.535+1.535746779−1.68e-08-0.000reproducedFound by Erich Friedman in March 2012.
Squares in a pentagon3s = 1.695+1.695619534−6.20e-04-0.037reproducedFound by David W. Cantrell in July 2012.
Squares in a pentagon4s = 1.861+1.861668600−6.69e-04-0.036reproducedFound by Maurizio Morandi in July 2012.
Squares in a pentagon5s = 1 + cos(18°) s = 1.951+1.961492731−1.05e-02-0.538behindFound by Erich Friedman in March 2012.
Squares in a pentagon6s = 6√(1–2/√5)+√5–2 s = 2.185+2.185586185−2.99e-08-0.000reproducedFound by Erich Friedman in March 2012.
Squares in a pentagon7s = 6√(1–2/√5)+2√5–4 s = 2.421+2.439120211−1.75e-02-0.721behindFound by Erich Friedman in July 2012.
Squares in a pentagon8s = 2.565+2.575452180−1.05e-02-0.407behindFound by David W. Cantrell in July 2012.
Squares in a pentagon9s = 2.693+2.705412398−1.24e-02-0.461behindFound by Timo Berthold et al in January 2026.
Squares in a pentagon10s = 2.793+2.796366316−3.37e-03-0.121behindFound by Timo Berthold et al in January 2026.
Squares in a pentagon11s = 2.890+2.894847645−4.85e-03-0.168behindFound by Timo Berthold et al in January 2026.
Squares in a pentagon12s = 2.969+2.988831874−1.98e-02-0.668behindFound by Timo Berthold et al in January 2026.
Squares in a pentagon13s = 3.12074+3.260925160−1.40e-01-4.492behindFound by Jake Loyd in June 2026.
Squares in a pentagon14s = 3.187+3.238140851−5.11e-02-1.605behindFound by David W. Cantrell in July 2012.
Squares in a pentagon15s = (√(125–38√5)+8–2√5)/3 s = 3.284+3.323328356−3.84e-02-1.170behindFound by David W. Cantrell in July 2012.
Squares in a pentagon16s = 3.47851+3.487260725−8.75e-03-0.252behindFound by Jonathan Viquerat in May 2026.
Squares in a pentagon17s = 3.541+3.551622973−1.06e-02-0.300behindFound by Ignacio Vallejo in March 2026.
Squares in a pentagon18s = 3.62598+3.798832169−1.73e-01-4.767behindFound by Haowei Lin in July 2026.
Squares in a pentagon19s = 3.70918+3.746958133−3.78e-02-1.019behindFound by Jake Loyd in June 2026.
Squares in a pentagon20s = 3.79775+4.003692666−2.06e-01-5.423behindFound by Jake Loyd in June 2026.
Squares in a pentagon21s = 3.86365+4.108757032−2.45e-01-6.344behindFound by Jake Loyd in June 2026.
Squares in a pentagon22s = 3.93347+3.953242830−1.98e-02-0.503behindFound by Jake Loyd in June 2026.
Squares in a pentagon23s = 4.00109+4.261907893−2.61e-01-6.519behindFound by Jake Loyd in June 2026.
Squares in a pentagon24s = 4.10103+4.269012680−1.68e-01-4.096behindFound by Jake Loyd in June 2026.
Squares in a pentagon25s = 4.16727+4.435230459−2.68e-01-6.430behindFound by Jake Loyd in June 2026.
Squares in a pentagon26s = 4.22150+4.517877255−2.96e-01-7.021behindFound by Jake Loyd in June 2026.
Squares in a pentagon27s = 4.34851+4.530329757−1.82e-01-4.181behindFound by Jake Loyd in June 2026.
Squares in a pentagon28s = 4.41576+4.492800662−7.70e-02-1.745behindFound by Jake Loyd in June 2026.
Squares in a pentagon29s = 4.49879+4.547264797−4.85e-02-1.078behindFound by Jake Loyd in June 2026.
Squares in a pentagon30s = 4.54753+4.801140634−2.54e-01-5.577behindFound by Jake Loyd in June 2026.
Squares in a pentagon31s = 4.62404+4.795992228−1.72e-01-3.719behindFound by Jake Loyd in June 2026.
Squares in a pentagon32s = 4.70000+4.797175656−9.72e-02-2.068behindFound by Jake Loyd in June 2026.
Squares in a pentagon33s = 4.75331+5.013852295−2.61e-01-5.481behindFound by Jake Loyd in June 2026.
Squares in a pentagon34s = 4.81345+4.949130031−1.36e-01-2.819behindFound by Jake Loyd in June 2026.
Squares in a pentagon35s = 4.86283+5.104013179−2.41e-01-4.960behindFound by Jake Loyd in June 2026.
Squares in a pentagon36s = 4.93131+5.073658317−1.42e-01-2.887behindFound by Jake Loyd in June 2026.
Squares in a pentagon37s = 4.97801+5.277323000−2.99e-01-6.013behindFound by Jake Loyd in June 2026.
Squares in a pentagon38s = 5.04838+5.354653659−3.06e-01-6.067behindFound by Jake Loyd in June 2026.
Squares in a pentagon39s = 5.13653+5.264976421−1.28e-01-2.501behindFound by Jake Loyd in June 2026.
Squares in a pentagon40s = 5.16849+5.333307992−1.65e-01-3.189behindFound by Jake Loyd in June 2026.
Squares in a tan2s = 2√2 = 2.828+2.828427126−1.13e-09-0.000reproduced
Squares in a tan3s = 33.000000001−1.20e-09-0.000reproduced
Squares in a tan4s = 5 / √2 = 3.5353.535533907−1.41e-09-0.000reproducedFound by Erich Friedman in March 2005.
Squares in a tan5s = 44.000000038−3.75e-08-0.000reproducedFound by Erich Friedman in March 2005.
Squares in a tan6s = 44.000020476−2.05e-05-0.001behind
Squares in a tan7s = 3 + √2 = 4.414+4.414213564−1.77e-09-0.000reproducedFound by Erich Friedman in March 2005.
Squares in a tan8s = 2 + 2√2 = 4.828+4.828427216−9.12e-08-0.000reproducedFound by Erich Friedman in March 2005.
Squares in a tan9s = 7 / √2 = 4.949+4.950013603−2.66e-04-0.005reproducedFound by Erich Friedman in March 2005.
Squares in a tan10s = 55.002812540−2.81e-03-0.056behind
Squares in a tan11s = 4 + √2 = 5.414+5.656875253−2.43e-01-4.482behindFound by Erich Friedman in March 2005.
Squares in a tan12s = 4√2 = 5.656+5.656855022−7.72e-07-0.000reproducedFound by Erich Friedman in March 2005.
Squares in a tan13s = 3 + 2√2 = 5.828+6.067680002−2.39e-01-4.105behindFound by Erich Friedman in March 2005.
Squares in a tan14s = 66.004579332−4.58e-03-0.076behindFound by Erich Friedman in March 2005.
Squares in a tan15s = 66.003513107−3.51e-03-0.059behind
Squares in a tan16s = 9 / √2 = 6.363+6.366891734−2.93e-03-0.046behindFound by Erich Friedman in March 2005.
Squares in a tan17s = 5 + √2 = 6.414+6.422776591−8.56e-03-0.134behindFound by Erich Friedman in March 2005.
Squares in a tan18s = 4 + 2√2 = 6.828+7.004173014−1.76e-01-2.574behindFound by Erich Friedman in March 2005.
Squares in a tan19s = 2 + 7 / √2 = 6.949+7.005592713−5.58e-02-0.804behindFound by David W. Cantrell in May 2005.
Squares in a tan20s = 77.050367250−5.04e-02-0.720behindFound by Erich Friedman in March 2005.
Squares in a tan21s = 77.075816964−7.58e-02-1.083behind
Squares in a tan22s = 1 + 9 / √2 = 7.363+7.778867109−4.15e-01-5.635behindFound by Erich Friedman in March 2005.
Squares in a tan23s = 6 + √2 = 7.414+7.782491174−3.68e-01-4.967behindFound by Erich Friedman in March 2005.
Squares in a tan24s = 7 + 1 / √2 = 7.707+7.782624959−7.55e-02-0.980behindFound by David W. Cantrell in May 2005.
Squares in a tan25s = 11 / √2 = 7.778+7.803619398−2.54e-02-0.327behind
Squares in a tan26s = 5 + 2√2 = 7.828+8.055926950−2.27e-01-2.906behindFound by Erich Friedman in March 2026.
Squares in a tan27s = 88.078384883−7.84e-02-0.980behindInherited published construction at n=28; not a newly discovered record
Squares in a tan28s = 88.179365403−1.79e-01-2.242behind
Squares in a triangle2s = 2 + 2 / √3 = 3.154+3.154700540−1.27e-09-0.000reproduced
Squares in a triangle3s = 3 / 2 + √3 = 3.232+3.232050809−1.31e-09-0.000reproducedFound by Erich Friedman in 1997.
Squares in a triangle4s = 3 + 2 / √3 = 4.154+4.154700608−6.95e-08-0.000reproducedFound by Erich Friedman in 1997.
Squares in a triangle5s = 2 + 4 / √3 = 4.309+4.309401143−6.63e-08-0.000reproducedFound by Erich Friedman in 1997.
Squares in a triangle6s = 2 + 4 / √3 = 4.309+4.309401157−8.00e-08-0.000reproducedFound by Erich Friedman in 1997.
Squares in a triangle7s = 4 + 2 / √3 = 5.154+5.154700631−9.26e-08-0.000reproducedFound by Erich Friedman in 1997.
Squares in a triangle8s = 5.301+5.309401248−8.40e-03-0.158behindFound by David W. Cantrell in July 2002.
Squares in a triangle9s = 3 + 4 / √3 = 5.309+5.313137041−3.74e-03-0.070behindFound by Erich Friedman in 1997.
Squares in a triangle10s = 2 + 2 √3 = 5.464+5.651955688−1.88e-01-3.438behindFound by Erich Friedman in 1997.
Squares in a triangle11s = 5 + 2 / √3 = 6.154+6.154973397−2.73e-04-0.004reproducedFound by Erich Friedman in 1997.
Squares in a triangle12s = 6.301+6.464101811−1.63e-01-2.589behindFound by David W. Cantrell in July 2002.
Squares in a triangle13s = 4 + 4 / √3 = 6.309+6.618803355−3.09e-01-4.904behindFound by Erich Friedman in 1997.
Squares in a triangle14s = 3 + 2 √3 = 6.464+6.466274895−2.17e-03-0.034behindFound by Erich Friedman in 1997.
Squares in a triangle15s = 3 + 2 √3 = 6.464+6.467309355−3.21e-03-0.050behindFound by Erich Friedman in 1997.
Squares in a triangle16s = 6 + 2 / √3 = 7.154+7.272753177−1.18e-01-1.650behindFound by Erich Friedman in 1997.
Squares in a triangle17s = 7.301+7.387467732−8.65e-02-1.184behindFound by David W. Cantrell in July 2002.
Squares in a triangle18s = 5 + 4 / √3 = 7.309+7.619365660−3.10e-01-4.241behindFound by Erich Friedman in 1997.
Squares in a triangle19s = 4 + 2 √3 = 7.464+7.474726208−1.06e-02-0.142behindFound by Erich Friedman in 1997.
Squares in a triangle20s = 7.61695+7.911191754−2.94e-01-3.863behindFound by Haowei Lin in July 2026.
Squares in a triangle21s = 3 + 8 / √3 = 7.618+7.636178468−1.74e-02-0.228behindFound by Erich Friedman in 1997.
Squares in a triangle22s = 7 + 2 / √3 = 8.15470+8.345753629−1.91e-01-2.343behindFound by Erich Friedman in 1997.
Squares in a triangle23s = 8.301+8.311768325−1.08e-02-0.130behindFound by David W. Cantrell in July 2002.
Squares in a triangle24s = 6 + 4 / √3 = 8.309+8.734108340−4.25e-01-5.111behindFound by Erich Friedman in 1997.
Squares in a triangle25s = 5 + 2 √3 = 8.464+8.886352658−4.22e-01-4.989behindFound by Erich Friedman in 1997.
Squares in a triangle26s = 4 + 8 / √3 = 8.618+8.784183316−1.65e-01-1.919behindFound by Erich Friedman in 1997.
Squares in a triangle27s = 4 + 8 / √3 = 8.618+9.317287836−6.98e-01-8.105behindFound by Erich Friedman in 1997.
Squares in a triangle28s = 3 + 10 / √3 = 8.773+8.943754375−1.70e-01-1.941behindFound by Erich Friedman in 1997.
Squares in a triangle29s = 8 + 2 / √3 = 9.154+9.421084421−2.66e-01-2.910behindFound by Erich Friedman in 1997.
Squares in a triangle30s = 9.301+9.654371077−3.53e-01-3.799behindFound by David W. Cantrell in July 2002.
Squares in a triangle31s = 7 + 4 / √3 = 9.309+9.480651961−1.71e-01-1.840behindFound by Erich Friedman in 1997.
Squares in a triangle32s = 6 + 2 √3 = 9.464+10.024325937−5.60e-01-5.920behindFound by Erich Friedman in 1997.
Squares in a triangle33s = 5 + 8 / √3 = 9.618+10.207228500−5.88e-01-6.118behindFound by Erich Friedman in 1997.
Squares in a triangle34s = 5 + 8 / √3 = 9.618+10.329626708−7.11e-01-7.391behindFound by Erich Friedman in 1997.
Squares in a triangle35s = 4 + 10 / √3 = 9.773+10.429995262−6.56e-01-6.717behindFound by Erich Friedman in 1997.
Squares in a triangle36s = 4 + 10 / √3 = 9.773+9.981073334−2.08e-01-2.124behindFound by Erich Friedman in 1997.
Squares in a triangle37s = 10.15299+10.255190295−1.02e-01-1.007behindFound by Gianluca Costantino in May 2026.
Squares in a triangle38s = 10.304+10.323153254−1.92e-02-0.186behindFound by Gianluca Costantino in April 2026.
Squares in a triangle39s = 8 + 4 / √3 = 10.30940+10.469492522−1.60e-01-1.553behindFound by Bhavithran Ananthan in July 2026.
Squares in a triangle40s = 7 + 2√3 = 10.46410+10.627605650−1.64e-01-1.563behindFound by Bhavithran Ananthan in July 2026.
Squares in a triangle41s = 10.61880+10.873318836−2.55e-01-2.397behindFound by Aristotle Papowitz in July 2026.
Squares in a triangle42s = 10.61880+10.956624317−3.38e-01-3.181behindFound by Aristotle Papowitz in July 2026.
Squares in a triangle43s = 10.77350+11.180800037−4.07e-01-3.781behindFound by Aristotle Papowitz in July 2026.
Squares in an L2s = 22.000000001−8.00e-10-0.000reproduced
Squares in an L3s = 22.000000001−8.00e-10-0.000reproduced
Squares in an L4s = 33.000000036−3.65e-08-0.000reproduced
Squares in an L5s = 33.000000051−5.10e-08-0.000reproduced
Squares in an L6s = (5√2 + 4) / 3 = 3.690+3.691334552−9.79e-04-0.027reproducedFound by David W. Cantrell in June 2005.
Squares in an L7s = √2 + 5/2 = 3.914+3.915343702−1.13e-03-0.029behindFound by Erich Friedman in June 2005.
Squares in an L8s = 44.000000061−6.08e-08-0.000reproduced
Squares in an L9s = 44.000000073−7.34e-08-0.000reproduced
Squares in an L10s = 44.000000070−7.04e-08-0.000reproduced
Squares in an L11s = 44.000000070−7.03e-08-0.000reproduced
Squares in an L12s = 44.000000701−7.01e-07-0.000reproduced
Squares in an L13s = 2 + 2√2 = 4.828+4.895813581−6.74e-02-1.396behindFound by Maurizio Morandi in October 2008.
Squares in an L14s = 4.98674+5.002000611−1.53e-02-0.306behindFound by Jonathan Viquerat in June 2026.
Squares in an L15s = 55.003011320−3.01e-03-0.060behind
Squares in an L16s = 55.015997543−1.60e-02-0.320behind
Squares in an L17s = 4/3 + 3√2 = 5.575+5.605236667−2.93e-02-0.525behindFound by Maurizio Morandi in October 2008.
Squares in an L18s = (2√2 + 14) / 3 = 5.609+5.856553319−2.47e-01-4.405behindFound by Erich Friedman in June 2005.
Squares in an L19s = 5.792+6.002631432−2.11e-01-3.637behindFound by David W. Cantrell in July 2012.
Squares in an L20s = 5.937+6.002105950−6.51e-02-1.097behindFound by David W. Cantrell in July 2012.
Squares in an L21s = 66.023955403−2.40e-02-0.399behind
Squares in an L22s = 66.062729102−6.27e-02-1.045behind
Squares in an L23s = 66.044976525−4.50e-02-0.750behind
Squares in an L24s = 66.004111686−4.11e-03-0.069behind
Squares in an L25s = 66.074412912−7.44e-02-1.240behind
Squares in an L26s = 66.002733569−2.73e-03-0.046behind
Squares in an L27s = 66.001992905−1.99e-03-0.033behind
Squares in an L28s = 6 + √2/2 = 6.707+6.985747884−2.79e-01-4.154behindFound by Maurizio Morandi in September 2015.
Squares in an L29s = 6.840+7.459934584−6.20e-01-9.063behindFound by Maurizio Morandi in September 2015.
Squares in an L30s = 77.010822287−1.08e-02-0.155behind
Squares in an L31s = 77.002962693−2.96e-03-0.042behind
Squares in an L32s = 77.005621988−5.62e-03-0.080behind
Squares in an L33s = 77.004567238−4.57e-03-0.065behind
Squares in an L34s = 7.513+8.002545447−4.90e-01-6.516behindFound by Joe DeVincentis in September 2015.
Squares in an L35s = 7.55991+8.004606407−4.45e-01-5.882behindFound by Aapo Lipponen in July 2026.
Squares in an L36s = 7.730+8.001601164−2.72e-01-3.514behindFound by Joe DeVincentis in September 2015.
Squares in an octagon2s = √(6–√2–√(20√2–26))/2 = 0.87669+0.876699201−1.34e-08-0.000reproducedFound by Maurizio Morandi in December 2013.
Squares in an octagon3s = 18 – 12√2 = 1.02943+1.029437267−1.59e-08-0.000reproducedFound by Erich Friedman in December 2013.
Squares in an octagon4s = √(4–2√2) = 1.08239+1.082392211−1.02e-08-0.000reproduced
Squares in an octagon5s = 3√2 – 3 = 1.24264+1.242640688−1.35e-09-0.000reproduced
Squares in an octagon6s = 7 – 4√2 = 1.34314+1.343145772−2.10e-08-0.000reproducedFound by Maurizio Morandi in December 2013.
Squares in an octagon7s = √(5–√2–√(8√2–9)) = 1.43690+1.436905902−2.33e-08-0.000reproducedFound by Maurizio Morandi in December 2013.
Squares in an octagon8s = 1.56962+1.573237994−3.62e-03-0.231behindFound by Grant Mowry in May 2026.
Squares in an octagon9s = 3/√(2+√2) = 1.62358+1.623588361−6.05e-08-0.000reproduced
Squares in an octagon10s = 1.68171+1.684765369−3.06e-03-0.182behindFound by Timo Berthold et al in May 2026.
Squares in an octagon11s = 1.73152+1.731585028−6.50e-05-0.004behindFound by Jonathan Viquerat in May 2026.
Squares in an octagon12s = √(6–√2–√(20√2–26)) = 1.75339+1.756171028−2.77e-03-0.158behindFound by Maurizio Morandi in December 2013.
Squares in an octagon13s = 1.89674+1.973204278−7.65e-02-4.031behindFound by Grant Mowry in May 2026.
Squares in an octagon14s = 1.98302+2.024750310−4.17e-02-2.104behindFound by Timo Berthold et al in May 2026.
Squares in an octagon15s = 2.03168+2.076313287−4.46e-02-2.197behindFound by Jonathan Viquerat in May 2026.
Squares in an octagon16s = 5√2 – 5 = 2.07106+2.071280707−2.13e-04-0.010behind
Squares in an octagon17s = 5√2 – 5 = 2.07106+2.215373368−1.44e-01-6.968behind
Squares in an octagon18s = 2.16732+2.197488029−3.02e-02-1.392behindFound by Timo Berthold et al in May 2026.
Squares in an octagon19s = 2.22435+2.231756100−7.41e-03-0.333behindFound by Jake Loyd in May 2026.
Squares in an octagon20s = 2.28598+2.380215831−9.42e-02-4.122behindFound by Jake Loyd in May 2026.
Squares in an octagon21s = sqrt(48–9√2–3√(104√2–126))/2 = 2.31833+2.320377494−2.04e-03-0.088behindFound by Jake Loyd in May 2026.
Squares in an octagon22s = 2.41575+2.489033373−7.33e-02-3.034behindFound by Jake Loyd in May 2026.
Squares in an octagon23s = 2.46879+2.500336230−3.15e-02-1.278behindFound by Jake Loyd in May 2026.
Squares in an octagon24s = 6√2–6 = 2.48528+2.486267418−9.86e-04-0.040behind
Squares in an octagon25s = 17(2–√2)/4 = 2.48959+2.645349445−1.56e-01-6.256behindFound by Jake Loyd in May 2026.
Squares in an octagon26s = 2.52709+2.660164352−1.33e-01-5.266behindFound by Aristotle Papowitz in July 2026.
Squares in an octagon27s = 2.58584+2.621139161−3.53e-02-1.365behindFound by Jake Loyd in May 2026.
Squares in an octagon28s = 2.62788+2.634420489−6.54e-03-0.249behindFound by Jake Loyd in May 2026.
Squares in an octagon29s = 2.70553+2.834751438−1.29e-01-4.776behindFound by Jake Loyd in May 2026.
Squares in an octagon30s = 2(11–√2)/7 = 2.73879+2.902115756−1.63e-01-5.963behindFound by Maurizio Morandi in May 2026.
Squares in an octagon31s = 2.78401+2.935265299−1.51e-01-5.433behindFound by Aapo Lipponen in July 2026.
Squares in an octagon32s = 2.83980+2.943329060−1.04e-01-3.646behindFound by Aristotle Papowitz in July 2026.
Squares in an octagon33s = 2.85903+2.901658423−4.26e-02-1.491behindFound by Aristotle Papowitz in July 2026.
Squares in an octagon34s = 7√2–7 = 2.89949+2.929037239−2.95e-02-1.019behindFound by Mohamed Metwalli in June 2026.
Squares in an octagon35s = 2.90678+2.921012364−1.42e-02-0.490behindFound by Aapo Lipponen in July 2026.
Squares in an octagon36s = 2.92870+2.930048542−1.35e-03-0.046behindFound by Aristotle Papowitz in July 2026.
Squares in an octagon37s = 10–5√2 = 2.92893+2.952199194−2.33e-02-0.794behind
Squares in an octagon38s = 3.02060+3.055268763−3.47e-02-1.148behindFound by Luke Kaiser in August 2026.
Squares in an octagon39s = 3.08204+3.090412030−8.37e-03-0.272behindFound by Aapo Lipponen in July 2026.
Squares in an octagon40s = 3.14120+3.161066489−1.99e-02-0.632behindFound by Aapo Lipponen in July 2026.
Tans in a circle2r = 1/√2 = .707+0.707106781−2.83e-10-0.000reproduced
Tans in a circle3r = (6 + √2)/8 = .926+0.926776710−1.51e-08-0.000reproducedFound by Serhiy Grabarchuk in April 2005.
Tans in a circle4r = 11.033857506−3.39e-02-3.386behind
Tans in a circle5r = 1.125+1.127965887−2.97e-03-0.264behindFound by Maurizio Morandi in July 2007.
Tans in a circle6r = 1.198+1.230269755−3.23e-02-2.694behindFound by Maurizio Morandi in July 2007.
Tans in a circle7r = 1.26287+1.298359204−3.55e-02-2.810behindFound by Jake Loyd in June 2026.
Tans in a circle8r = √(1+1/√2) = 1.306+1.332062978−2.55e-02-1.953behindFound by Serhiy Grabarchuk in April 2005.
Tans in a circle9r = 1.37381+1.455392414−8.16e-02-5.938behindFound by Thomas Greenleaf in June 2026.
Tans in a circle10r = 1.42230+1.459002929−3.67e-02-2.581behindFound by Thomas Greenleaf in June 2026.
Tans in a circle11r = 1.480+1.592426035−1.12e-01-7.596behindFound by David W. Cantrell in August 2007.
Tans in a circle12r = 1.50878+1.583266102−7.45e-02-4.937behindFound by Jake Loyd in June 2026.
Tans in a circle13r = 1.55348+1.768541339−2.15e-01-13.844behindFound by Jake Loyd in June 2026.
Tans in a circle14r = √10/2 = 1.581+1.801117015−2.20e-01-13.914behindFound by Serhiy Grabarchuk in April 2005.
Tans in a circle15r = 1.66443+1.755911431−9.15e-02-5.496behindFound by Jake Loyd in June 2026.
Tans in a circle16r = 1.73588+1.917203259−1.81e-01-10.446behindFound by Haowei Lin in July 2026.
Tans in a circle17r = 1.79723+1.872598362−7.54e-02-4.194behindFound by Haowei Lin in July 2026.
Tans in a circle18r = 1.83366+2.036503034−2.03e-01-11.062behindFound by Jake Loyd in June 2026.
Tans in a circle19r = 1.88814+1.973825791−8.57e-02-4.538behindFound by Jake Loyd in June 2026.
Tans in a circle20r = 1.93661+2.016251658−7.96e-02-4.112behindFound by Haowei Lin in July 2026.
Tans in a domino2s = 2√2/3 = .94280+0.942809042−3.77e-10-0.000reproducedFound by Maurizio Morandi in June 2026.
Tans in a domino3s = .99900+0.999003003−3.00e-06-0.000reproducedFound by Maurizio Morandi in June 2026.
Tans in a domino4s = 11.000000000−4.00e-10-0.000reproduced
Tans in a domino5s = 1.30157+1.303244691−1.67e-03-0.129behindFound by Jonathan Viquerat in June 2026.
Tans in a domino6s = 4/3 = 1.33333+1.355000204−2.17e-02-1.625behindFound by Maurizio Morandi in June 2026.
Tans in a domino7s = √2 = 1.41421+1.419367086−5.15e-03-0.364behind
Tans in a domino8s = √2 = 1.41421+1.513782719−9.96e-02-7.041behind
Tans in a domino9s = 1.60710+1.754613054−1.48e-01-9.179behindFound by Maurizio Morandi in June 2026.
Tans in a domino10s = 1 + 1/√2 = 1.70710+1.771713934−6.46e-02-3.785behindFound by Maurizio Morandi in June 2026.
Tans in a domino11s = 1.74954+1.916394459−1.67e-01-9.537behindFound by Aapo Lipponen in July 2026.
Tans in a domino12s = 3(1+√2)/4 = 1.81066+1.998048024−1.87e-01-10.349behindFound by Maurizio Morandi in June 2026.
Tans in a domino13s = 1/2+√2 = 1.91421+1.944687338−3.05e-02-1.592behindFound by Maurizio Morandi in June 2026.
Tans in a domino14s = (7+2√2)/5 = 1.96568+2.015263222−4.96e-02-2.522behindFound by Maurizio Morandi in June 2026.
Tans in a domino15s = 22.039651770−3.97e-02-1.983behind
Tans in a domino16s = 22.012810801−1.28e-02-0.641behind
Tans in a domino17s = (7+4√2)/6 = 2.10947+2.590358051−4.81e-01-22.796behindFound by Maurizio Morandi in June 2026.
Tans in a domino18s = 2.17527+2.257584016−8.23e-02-3.784behindFound by Maurizio Morandi in June 2026.
Tans in a hexagon2s = (3+√3)/6 = .78867+0.788675138−3.09e-09-0.000reproducedFound by Jonathan Viquerat in May 2026.
Tans in a hexagon3s = .98882+0.988828393−8.39e-06-0.001reproducedFound by Aapo Lippoen in July 2026.
Tans in a hexagon4s = 1.05845+1.060623023−2.17e-03-0.205behindFound by Jonathan Viquerat in May 2026.
Tans in a hexagon5s = 1.13976+1.206521484−6.68e-02-5.858behindFound by Jonathan Viquerat in May 2026.
Tans in a hexagon6s = 1.20610+1.241260192−3.52e-02-2.915behindFound by Jonathan Viquerat in May 2026.
Tans in a hexagon7s = 1.30322+1.323277920−2.01e-02-1.539behindFound by Thomas Greenleaf in June 2026.
Tans in a hexagon8s = 1.37728+1.513097590−1.36e-01-9.861behindFound by Thomas Greenleaf in June 2026.
Tans in a hexagon9s = 1.44631+1.610422909−1.64e-01-11.347behindFound by Thomas Greenleaf in June 2026.
Tans in a hexagon10s = 1.51366+1.624540842−1.11e-01-7.325behindFound by Thomas Greenleaf in June 2026.
Tans in a hexagon11s = 1.59198+1.632152964−4.02e-02-2.523behindFound by Jake Loyd in June 2026.
Tans in a hexagon12s = 1.65076+1.714942884−6.42e-02-3.888behindFound by Jake Loyd in June 2026.
Tans in a hexagon13s = 1.70429+1.788144572−8.39e-02-4.920behindFound by Jake Loyd in June 2026.
Tans in a hexagon14s = 1.76680+1.984370339−2.18e-01-12.314behindFound by Jake Loyd in June 2026.
Tans in a hexagon15s = 1.82658+2.037201548−2.11e-01-11.531behindFound by Jake Loyd in June 2026.
Tans in a hexagon16s = 1.88728+1.901404475−1.41e-02-0.748behindFound by Jake Loyd in June 2026.
Tans in a hexagon17s = 1.93877+1.981827839−4.31e-02-2.221behindFound by Jake Loyd in June 2026.
Tans in a hexagon18s = 1.99031+2.038562224−4.83e-02-2.424behindFound by Jake Loyd in June 2026.
Tans in a hexagon19s = 2.03182+2.314967080−2.83e-01-13.936behindFound by Jake Loyd in June 2026.
Tans in a hexagon20s = 2.1029+2.161143424−5.82e-02-2.770behindFound by Jake Loyd in June 2026.
Tans in a hexagon21s = 2.14048+2.366806296−2.26e-01-10.574behindFound by Jake Loyd in June 2026.
Tans in a hexagon22s = 2.19278+2.383146217−1.90e-01-8.682behindFound by Jake Loyd in June 2026.
Tans in a pentagon2s = .93685+0.936859710−9.71e-06-0.001reproducedFound by Jonathan Viquerat in May 2026.
Tans in a pentagon3s = 1.10580+1.105796242+3.76e-060.000reproducedFound by Jonathan Viquerat in May 2026.
Tans in a pentagon4s = 1.28055+1.280785801−2.36e-04-0.018behindFound by Aapo Lipponen in July 2026.
Tans in a pentagon5s = 1.38606+1.386065049−5.05e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Tans in a pentagon6s = 1.50657+1.551761291−4.52e-02-3.000behindFound by Jonathan Viquerat in May 2026.
Tans in a pentagon7s = 1.62694+1.643618902−1.67e-02-1.025behindFound by Jonathan Viquerat in May 2026.
Tans in a pentagon8s = 1.71964+1.807821457−8.82e-02-5.128behindFound by Jonathan Viquerat in May 2026.
Tans in a pentagon9s = 1.79909+1.932526604−1.33e-01-7.417behindFound by Thomas Greenleaf in June 2026.
Tans in a pentagon10s = 1.87393+1.988353470−1.14e-01-6.106behindFound by Thomas Greenleaf in June 2026.
Tans in a pentagon11s = 1.95640+2.040666832−8.43e-02-4.307behindFound by Jake Loyd in June 2026.
Tans in a pentagon12s = 2.02754+2.094219372−6.67e-02-3.289behindFound by Jake Loyd in June 2026.
Tans in a pentagon13s = 2.10941+2.176649839−6.72e-02-3.188behindFound by Jake Loyd in June 2026.
Tans in a pentagon14s = 2.16639+2.402834722−2.36e-01-10.914behindFound by Jake Loyd in June 2026.
Tans in a pentagon15s = 2.25710+2.393924009−1.37e-01-6.062behindFound by Jake Loyd in June 2026.
Tans in a pentagon16s = 2.32695+2.531867924−2.05e-01-8.806behindFound by Jake Loyd in June 2026.
Tans in a pentagon17s = 2.38607+2.469756926−8.37e-02-3.507behindFound by Jake Loyd in June 2026.
Tans in a pentagon18s = 2.44578+2.711505436−2.66e-01-10.865behindFound by Jake Loyd in June 2026.
Tans in a pentagon19s = 2.53585+2.777210790−2.41e-01-9.518behindFound by Jake Loyd in June 2026.
Tans in a pentagon20s = 2.59169+2.867840457−2.76e-01-10.655behindFound by Jake Loyd in June 2026.
Tans in a pentagon21s = 2.65501+2.742475222−8.75e-02-3.294behindFound by Jake Loyd in June 2026.
Tans in a pentagon22s = 2.71124+3.019915317−3.09e-01-11.385behindFound by Jake Loyd in June 2026.
Tans in a square2s = 11.000000000−4.00e-10-0.000reproduced
Tans in a square3s = √2 = 1.414+1.414213563−5.66e-10-0.000reproduced
Tans in a square4s = √2 = 1.414+1.414213563−5.66e-10-0.000reproduced
Tans in a square5s = 1.788+1.788569804−5.70e-04-0.032reproducedFound by Maurizio Morandi in August 2007.
Tans in a square6s = 1.937+1.998974240−6.20e-02-3.199behindFound by Maurizio Morandi in February 2008.
Tans in a square7s = 1.999+2.000000001−1.00e-03-0.050reproducedFound by Maurizio Morandi in August 2007.
Tans in a square8s = 22.000018476−1.85e-05-0.001behind
Tans in a square9s = 3/2 + 1/√2 = 2.207+2.356949615−1.50e-01-6.789behindFound by Erich Friedman in March 2005.
Tans in a square10s = 2.393+2.601727233−2.09e-01-8.722behindFound by Maurizio Morandi in January 2008.
Tans in a square11s = 1 + √2 = 2.414+2.624836148−2.11e-01-8.725behindFound by Maurizio Morandi in August 2007.
Tans in a square12s = 2.61115+2.630802721−1.97e-02-0.753behindFound by Haowei Lin in July 2026.
Tans in a square13s = 2.688+3.008628311−3.21e-01-11.928behindFound by Maurizio Morandi in March 2008.
Tans in a square14s = 2.76345+2.854047963−9.06e-02-3.278behindFound by Haowei Lin in July 2026.
Tans in a square15s = 2.82735+3.060035152−2.33e-01-8.230behindFound by Aapo Lipponen in July 2026.
Tans in a square16s = 2√2 = 2.828+3.043632017−2.15e-01-7.610behind
Tans in a square17s = 2.970+3.446091479−4.76e-01-16.030behindFound by David W. Cantrell in August 2007.
Tans in a square18s = 33.064198962−6.42e-02-2.140behind
Tans in a square19s = 3.201+3.508781859−3.08e-01-9.615behindFound by Maurizio Morandi in February 2008.
Tans in a square20s = 3.26857+3.556819788−2.88e-01-8.819behindFound by Aapo Lippoen in July 2026.
Tans in a square21s = 3.340+3.959542464−6.20e-01-18.549behindFound by Maurizio Morandi in March 2008.
Tans in a square22s = 3.392+3.514392618−1.22e-01-3.608behindFound by Maurizio Morandi in December 2007.
Tans in a square23s = 3.464+3.609775406−1.46e-01-4.208behindFound by Maurizio Morandi in December 2007.
Tans in a square24s = 3.517+3.959767771−4.43e-01-12.589behindFound by David W. Cantrell in August 2007.
Tans in a tan2s = √2 = 1.414+1.414213563−5.66e-10-0.000reproduced
Tans in a tan3s = (4+√2+2√(2+2√2))/5 = 1.96179+1.961790004−7.85e-10-0.000reproducedFound by Ed Pegg in March 2005.
Tans in a tan4s = 22.121320386−1.21e-01-6.066behind
Tans in a tan5s = 2.405+2.414213610−9.21e-03-0.383behindFound by David W. Cantrell in May 2005.
Tans in a tan6s = (12 + √6 + 5√2)/8 = 2.690+2.708008426−1.79e-02-0.667behindFound by Maurizio Morandi in October 2007.
Tans in a tan7s = 2.82434+2.854060736−2.97e-02-1.052behindFound by Maurizio Morandi in August 2007.
Tans in a tan8s = 2√2 = 2.828+3.000149976−1.72e-01-6.072behind
Tans in a tan9s = 33.038239476−3.82e-02-1.275behind
Tans in a tan10s = 3.30743+3.413039485−1.06e-01-3.193behindFound by Maurizio Morandi in August 2007.
Tans in a tan11s = 2 + √2 = 3.414+3.665634546−2.51e-01-7.364behindFound by Erich Friedman in March 2005.
Tans in a tan12s = 3.53106+3.752654870−2.22e-01-6.276behindFound by Maurizio Morandi in August 2007.
Tans in a tan13s = 3 + √2/2 = 3.707+4.095535336−3.88e-01-10.478behindFound by Erich Friedman in March 2005.
Tans in a tan14s = 1 + 2√2 = 3.828+4.010060739−1.82e-01-4.745behindFound by Erich Friedman in March 2005.
Tans in a tan15s = 5/2 + √2 = 3.914+4.047702897−1.33e-01-3.411behindFound by Maurizio Morandi in August 2007.
Tans in a tan16s = 44.069311884−6.93e-02-1.733behind
Tans in a tan17s = 4.181+4.371183055−1.90e-01-4.549behindFound by Maurizio Morandi in August 2007.
Tans in a tan18s = 3√2 = 4.242+4.508189761−2.66e-01-6.260behind
Tans in a tan19s = 4.413+4.734706665−3.22e-01-7.290behindFound by David W. Cantrell in May 2005.
Tans in a tan20s = 4.535+4.784964858−2.50e-01-5.512behindFound by Maurizio Morandi in August 2007.
Tans in a tan21s = (6 + 9√2)/4 = 4.681+4.959368900−2.77e-01-5.926behindFound by Maurizio Morandi in October 2007.
Tans in a tan22s = 3 + 5√2/4 = 4.767+4.995243624−2.27e-01-4.772behindFound by Maurizio Morandi in July 2009.
Tans in a tan23s = 4.886+5.166397479−2.80e-01-5.739behindFound by Maurizio Morandi in November 2007.
Tans in a tan24s = 4.947+5.105939860−1.59e-01-3.213behindFound by Maurizio Morandi in October 2007.
Tans in a tan25s = 55.011449527−1.14e-02-0.229behind
Tans in a tan26s = 3 + 3/√2 = 5.121+5.801776469−6.80e-01-13.288behindFound by Maurizio Morandi in July 2009.
Tans in a tan27s = 5.241+5.842092553−6.01e-01-11.469behindFound by Maurizio Morandi in July 2009.
Tans in a triangle2s = (1+√3)/√2 = 1.93185+1.931851653−7.73e-10-0.000reproduced
Tans in a triangle3s = 3/√2 = 2.12132+2.121320344−8.49e-10-0.000reproduced
Tans in a triangle4s = 2.53732+2.542382915−5.06e-03-0.200behindFound by Jonathan Viquerat in May 2026.
Tans in a triangle5s = 2.74147+2.777939226−3.65e-02-1.330behindFound by Jonathan Viquerat in May 2026.
Tans in a triangle6s = 2.93781+2.975496728−3.77e-02-1.283behindFound by Jonathan Viquerat in May 2026.
Tans in a triangle7s = 3.17427+3.216732358−4.25e-02-1.338behindFound by Jonathan Loyd in June 2026.
Tans in a triangle8s = 3.35224+3.432106183−7.99e-02-2.382behindFound by Jonathan Viquerat in May 2026.
Tans in a triangle9s = 3.51439+3.652427543−1.38e-01-3.928behindFound by Jonathan Loyd in June 2026.
Tans in a triangle10s = 3.69367+3.957766211−2.64e-01-7.150behindFound by Aapo Lipponen in July 2026.
Tans in a triangle11s = 3.82731+4.141753754−3.14e-01-8.216behindFound by Jonathan Loyd in June 2026.
Tans in a triangle12s = 44.048090182−4.81e-02-1.202behindFound by Jonathan Loyd in June 2026.
Tans in a triangle13s = 4.14927+4.506795877−3.58e-01-8.617behindFound by Jonathan Loyd in June 2026.
Tans in a triangle14s = 4.29538+4.853863666−5.58e-01-13.002behindFound by Jonathan Loyd in June 2026.
Tans in a triangle15s = 4.41143+5.208837878−7.97e-01-18.076behindFound by Haowei Lin in July 2026.
Tans in a triangle16s = 4.60690+5.176505225−5.70e-01-12.364behindFound by Haowei Lin in July 2026.
Tans in a triangle17s = 4.72627+4.953290246−2.27e-01-4.803behindFound by Jonathan Loyd in June 2026.
Tans in a triangle18s = 4.84346+5.399196137−5.56e-01-11.474behindFound by Jonathan Loyd in June 2026.
Tans in a triangle19s = 4.96765+5.674645515−7.07e-01-14.232behindFound by Thomas Greenleaf in June 2026.
Tans in a triangle20s = 5.06562+5.759684374−6.94e-01-13.701behindFound by Thomas Greenleaf in June 2026.
Tans in a triangle21s = 5.23033+5.515514513−2.85e-01-5.453behindFound by Jonathan Loyd in June 2026.
Tans in a triangle22s = 5.33580+5.493114885−1.57e-01-2.948behindFound by Jonathan Loyd in June 2026.
Tans in an L2s = 1/√2 = .707+0.707106781−2.83e-10-0.000reproduced
Tans in an L3s = (1+√7) / 4 = .911+0.911437844−1.63e-08-0.000reproducedFound by Erich Friedman in July 2011.
Tans in an L4s = (√6 + √2) / 4 = .965+0.996805449−3.09e-02-3.200behindFound by Maurizio Morandi in July 2012.
Tans in an L5s = 10.999915808+8.42e-050.008beaten
Tans in an L6s = 11.000000000−4.00e-10-0.000reproduced
Tans in an L7s = (2 + √2) / 3 = 1.138+1.237772787−9.97e-02-8.761behindFound by David W. Cantrell in July 2012.
Tans in an L8s = (1 + 2√2) / 3 = 1.276+1.381696585−1.06e-01-8.272behindFound by Maurizio Morandi in July 2012.
Tans in an L9s = 4/3 = 1.333+1.401007779−6.77e-02-5.077behindFound by Maurizio Morandi in July 2012.
Tans in an L10s = 1.400+1.506999839−1.07e-01-7.643behindFound by Maurizio Morandi in July 2012.
Tans in an L11s = √2 = 1.414+1.499986693−8.58e-02-6.066behind
Tans in an L12s = √2 = 1.414+1.569539715−1.55e-01-10.985behind
Tans in an L13s = 1.499+1.802710992−3.04e-01-20.261behindFound by Maurizio Morandi in July 2012.
Tans in an L14s = 1.607+1.823063981−2.16e-01-13.445behindFound by Maurizio Morandi in August 2012.
Tans in an L15s = 1.680+1.712804130−3.28e-02-1.953behindFound by Maurizio Morandi in August 2012.
Tans in an L16s = 1 + 1/√2 = 1.70711+1.942331421−2.35e-01-13.779behindFound by Edoardo Gnaldi in September 2026.
Tans in an L17s = (4 + √2) / 3 = 1.804+1.982366601−1.78e-01-9.846behindFound by Maurizio Morandi in August 2012.
Tans in an octagon2s = 1/√(2+√2) = .54119+0.541196100−2.16e-10-0.000reproduced
Tans in an octagon3s = .72389+0.723891057−1.06e-06-0.000reproducedFound by Thomas Greenleaf in June 2026.
Tans in an octagon4s = √(2–√2) = .76536+0.823112557−5.77e-02-7.545behindFound by Thomas Greenleaf in June 2026.
Tans in an octagon5s = .88072+0.885270198−4.55e-03-0.517behindFound by Thomas Greenleaf in June 2026.
Tans in an octagon6s = √(2+√2)/2 = .92387+0.959126328−3.52e-02-3.815behindFound by Thomas Greenleaf in June 2026.
Tans in an octagon7s = .98623+1.050704068−6.45e-02-6.537behindFound by Thomas Greenleaf in June 2026.
Tans in an octagon8s = 11.086166119−8.62e-02-8.617behind
Tans in an octagon9s = 1.08295+1.137769909−5.48e-02-5.062behindFound by Jake Loyd in June 2026.
Tans in an octagon10s = 1.09348+1.229694279−1.36e-01-12.457behindFound by Jake Loyd in June 2026.
Tans in an octagon11s = 1.15384+1.255356939−1.02e-01-8.798behindFound by Jake Loyd in June 2026.
Tans in an octagon12s = 4–2√2 = 1.17157+1.250630211−7.91e-02-6.748behindFound by Thomas Greenleaf in June 2026.
Tans in an octagon13s = 1.21868+1.428886384−2.10e-01-17.249behindFound by Jake Loyd in June 2026.
Tans in an octagon14s = 3(√2–1) = 1.24264+1.416268352−1.74e-01-13.972behindFound by Maurizio Morandi in June 2026.
Tans in an octagon15s = 1.31145+1.426752889−1.15e-01-8.792behindFound by Jake Loyd in June 2026.
Tans in an octagon16s = 9/√2–5 = 1.36396+1.447148527−8.32e-02-6.099behindFound by Jake Loyd in June 2026.
Tans in an octagon17s = 1.39954+1.486068871−8.65e-02-6.183behindFound by Jake Loyd in June 2026.
Tans in an octagon18s = √2 = 1.41421+1.509219859−9.50e-02-6.718behindFound by Jake Loyd in June 2026.
Tans in an octagon19s = 1.48829+1.733095857−2.45e-01-16.449behindFound by Jake Loyd in June 2026.
Tans in an octagon20s = 35/3–43/3√2 = 1.53146+1.757936323−2.26e-01-14.788behindFound by Jake Loyd in June 2026.
Triangles in a circle2r = √3/2 = .866+0.866025415−1.07e-08-0.000reproduced
Triangles in a circle3r = 3√3 – 3√2 = .953+0.953511750−1.48e-08-0.000reproducedFound by Erich Friedman in 1997.
Triangles in a circle4r = .980+0.980597945−5.98e-04-0.061reproducedFound by Erich Friedman in 1997.
Triangles in a circle5r = 11.000000000−4.00e-10-0.000reproduced
Triangles in a circle6r = 11.000015329−1.53e-05-0.002behind
Triangles in a circle7r = 1.152+1.153231878−1.23e-03-0.107behindFound by Erich Friedman in 1997.
Triangles in a circle8r = 1.263+1.265692129−2.69e-03-0.213behindFound by Maurizio Morandi in April 2008.
Triangles in a circle9r = 1.314+1.314752945−7.53e-04-0.057reproducedFound by David W. Cantrell in July 2002.
Triangles in a circle10r = 1.38468+1.385680061−1.00e-03-0.072behindFound by Jonathan Viquerat in June 2026.
Triangles in a circle11r = 1.466+1.507265477−4.13e-02-2.815behindFound by David W. Cantrell in August 2012.
Triangles in a circle12r = 1.507+1.511536071−4.54e-03-0.301behindFound by David W. Cantrell in October 2005.
Triangles in a circle13r = √(7/3) = 1.527+1.530500836−2.98e-03-0.195behindFound by Erich Friedman in 1997.
Triangles in a circle14r = 1.60448+1.607206958−2.73e-03-0.170behindFound by Jake Loyd in June 2026.
Triangles in a circle15r = 1.636+1.714286578−7.83e-02-4.785behindFound by David W. Cantrell in July 2002.
Triangles in a circle16r = 1.687+1.744892910−5.79e-02-3.432behindFound by Maurizio Morandi in April 2008.
Triangles in a circle17r = 1.730+1.981617862−2.52e-01-14.544behindFound by David W. Cantrell in July 2005.
Triangles in a circle18r = 1.80176+1.806601968−4.84e-03-0.269behindFound by Jake Loyd in June 2026.
Triangles in a circle19r = √(10/3) = 1.825+1.853852175−2.81e-02-1.540behindFound by Haym Hirsh in August 2019.
Triangles in a circle20r = 1.874+1.935507862−6.15e-02-3.282behindFound by Erich Friedman in 1997.
Triangles in a circle21r = 1.910+1.914916747−4.92e-03-0.257behindFound by Maurizio Morandi in May 2008.
Triangles in a circle22r = 1.943+2.012362967−6.94e-02-3.570behindFound by Maurizio Morandi in June 2008.
Triangles in a circle23r = 1.98467+1.989521196−4.85e-03-0.244behindFound by Jake Loyd in June 2026.
Triangles in a circle24r = 22.017174420−1.72e-02-0.859behind
Triangles in a circle25r = 2.055+2.293554876−2.39e-01-11.609behindFound by David W. Cantrell in July 2005.
Triangles in a circle26r = 2.10664+2.123819166−1.72e-02-0.815behindFound by Thomas Schadt in August 2026.
Triangles in a circle27r = 2.138+2.297639709−1.60e-01-7.467behindFound by David W. Cantrell in July 2005.
Triangles in a circle28r = 2.18805+2.291934827−1.04e-01-4.748behindFound by Thomas Schadt in August 2026.
Triangles in a circle29r = 2.20935+2.378622597−1.69e-01-7.662behindFound by Jake Loyd in June 2026.
Triangles in a circle30r = 2.25124+2.373894060−1.23e-01-5.448behindFound by Thomas Schadt in August 2026.
Triangles in a circle31r = 2.272+2.297979887−2.60e-02-1.143behindFound by Maurizio Morandi in July 2008.
Triangles in a circle32r = 2.31295+2.500492563−1.88e-01-8.108behindFound by Thomas Schadt in August 2026.
Triangles in a circle33r = 2.34169+2.503360719−1.62e-01-6.904behindFound by Thomas Schadt in August 2026.
Triangles in a circle34r = 2.37504+2.528099896−1.53e-01-6.445behindFound by Thomas Schadt in August 2026.
Triangles in a circle35r = 2.39906+2.526071254−1.27e-01-5.294behindFound by Thomas Schadt in August 2026.
Triangles in a circle36r = 2.43969+2.455129665−1.54e-02-0.633behindFound by Thomas Schadt in August 2026.
Triangles in a circle37r = 2.46349+2.520059271−5.66e-02-2.296behindFound by Thomas Schadt in August 2026.
Triangles in a circle38r = 2.49003+2.659013293−1.69e-01-6.786behindFound by Thomas Schadt in August 2026.
Triangles in a circle39r = 2.51938+2.558120738−3.87e-02-1.538behindFound by Thomas Schadt in August 2026.
Triangles in a circle40r = 2.55675+2.652385735−9.56e-02-3.741behindFound by Thomas Schadt in August 2026.
Triangles in a circle41r = 2.58629+2.604958107−1.87e-02-0.722behindFound by Thomas Schadt in August 2026.
Triangles in a circle42r = 2.61145+2.653029967−4.16e-02-1.592behindFound by Thomas Schadt in August 2026.
Triangles in a circle43r = 2.63998+2.807165647−1.67e-01-6.333behindFound by Thomas Schadt in August 2026.
Triangles in a circle44r = 2.66620+2.698836825−3.26e-02-1.224behindFound by Thomas Schadt in August 2026.
Triangles in a circle45r = 2.69809+2.739751352−4.17e-02-1.544behindFound by Thomas Schadt in August 2026.
Triangles in a circle46r = 2.72457+2.842261741−1.18e-01-4.320behindFound by Thomas Schadt in August 2026.
Triangles in a circle47r = 2.75037+2.785123760−3.48e-02-1.264behindFound by Thomas Schadt in August 2026.
Triangles in a circle48r = 2.77672+2.800826813−2.41e-02-0.868behindFound by Thomas Schadt in August 2026.
Triangles in a circle49r = 2.80521+2.827161756−2.20e-02-0.783behindFound by Thomas Schadt in August 2026.
Triangles in a circle50r = 2.82736+2.854818307−2.75e-02-0.971behindFound by Thomas Schadt in August 2026.
Triangles in a domino2s = √3/20.866025404−3.46e-10-0.000reproduced
Triangles in a domino3s = .96796+0.967967141−7.14e-06-0.001reproducedFound by Jonathan Viquerat in April 2026.
Triangles in a domino4s = 1.12036+1.120369428−9.43e-06-0.001reproducedFound by Jonathan Viquerat in April 2026.
Triangles in a domino5s = 1.26315+1.263157874−7.87e-06-0.001reproducedFound by Jonathan Viquerat in April 2026.
Triangles in a domino6s = 1.37629+1.376305026−1.50e-05-0.001behindFound by Jonathan Viquerat in April 2026.
Triangles in a domino7s = 1.49076+1.492220203−1.46e-03-0.098behindFound by Jonathan Viquerat in April 2026.
Triangles in a domino8s = 1.56293+1.577894780−1.50e-02-0.957behindFound by Jonathan Viquerat in April 2026.
Triangles in a domino9s = 1.64882+1.693300468−4.45e-02-2.698behindFound by Bhavithran Ananthan in July 2026.
Triangles in a domino10s = 1.68302+1.719108930−3.61e-02-2.144behindFound by Aapo Lipponen in July 2026.
Triangles in a domino11s = 1.72971+1.730010548−3.01e-04-0.017behindFound by Jonathan Viquerat in September 2026.
Triangles in a domino12s = 1.74022+1.745279466−5.06e-03-0.291behindFound by Jonathan Viquerat in September 2026.
Triangles in a domino13s = 1.85319+1.858381558−5.19e-03-0.280behindFound by Jonathan Viquerat in April 2026.
Triangles in a domino14s = 3(3–√3)/2 = 1.90192+1.930064476−2.81e-02-1.480behindFound by Jonathan Viquerat in April 2026.
Triangles in a domino15s = 1.97950+1.980796737−1.30e-03-0.066behindFound by Jonathan Viquerat in April 2026.
Triangles in a domino16s = 22.083207026−8.32e-02-4.160behindFound by Jonathan Viquerat in April 2026.
Triangles in a domino17s = 2.10306+2.108552105−5.49e-03-0.261behindFound by Jonathan Viquerat in April 2026.
Triangles in a domino18s = 2.14913+2.185604024−3.65e-02-1.697behindFound by Jonathan Viquerat in April 2026.
Triangles in a domino19s = 2.24322+2.424977651−1.82e-01-8.103behindFound by Thomas Greenleaf in June 2026.
Triangles in a domino20s = 2.29729+2.501300032−2.04e-01-8.880behindFound by Aapo Lipponen in July 2026.
Triangles in a domino21s = 2.36328+2.537266136−1.74e-01-7.362behindFound by Thomas Greenleaf in June 2026.
Triangles in a domino22s = 2.42155+2.600596702−1.79e-01-7.394behindFound by Jonathan Viquerat in September 2026.
Triangles in a domino23s = 2.45562+2.601639619−1.46e-01-5.946behindFound by Jonathan Viquerat in September 2026.
Triangles in a domino24s = 2.48387+2.493522297−9.65e-03-0.389behindFound by Jonathan Viquerat in September 2026.
Triangles in a domino25s = 2.52126+2.619869549−9.86e-02-3.911behindFound by Jonathan Viquerat in September 2026.
Triangles in a hexagon2s = √3/2 = .866+0.866025415−1.14e-08-0.000reproduced
Triangles in a hexagon3s = √((6+√33)/12) = .989+0.989299542−1.53e-08-0.000reproducedFound by Erich Friedman in April 2005.
Triangles in a hexagon4s = 11.000000000−4.00e-10-0.000reproduced
Triangles in a hexagon5s = 11.000000000−4.00e-10-0.000reproduced
Triangles in a hexagon6s = 11.000000000−4.00e-10-0.000reproduced
Triangles in a hexagon7s = 1.277+1.323873211−4.69e-02-3.671behindFound by David W. Cantrell in May 2005.
Triangles in a hexagon8s = 1.356+1.359291669−3.29e-03-0.243behindFound by David W. Cantrell in July 2012.
Triangles in a hexagon9s = 1.434+1.435739443−1.74e-03-0.121behindFound by Erich Friedman in April 2005.
Triangles in a hexagon10s = 1.497+1.497049622−4.96e-05-0.003reproducedFound by Timo Berthold et al in January 2026.
Triangles in a hexagon11s = 3/2 = 1.5001.538675402−3.87e-02-2.578behindFound by Erich Friedman in April 2005.
Triangles in a hexagon12s = 1.623+1.629500260−6.50e-03-0.401behindFound by Timo Berthold et al in January 2026.
Triangles in a hexagon13s = √(587+51√17)/12√2 = 1.663829+1.682474252−1.86e-02-1.121behindFound by Ian Watson in April 2026.
Triangles in a hexagon14s = 1.725+1.736203802−1.12e-02-0.649behindFound by David W. Cantrell in August 2012.
Triangles in a hexagon15s = 7/4 = 1.7501.833334030−8.33e-02-4.762behindFound by Erich Friedman in April 2005.
Triangles in a hexagon16s = 9/5 = 1.8001.984239492−1.84e-01-10.236behindFound by Maurizio Morandi in April 2008.
Triangles in a hexagon17s = 11/6 = 1.833+1.936298188−1.03e-01-5.617behindFound by Maurizio Morandi in April 2008.
Triangles in a hexagon18s = 17/9 = 1.888+2.013486653−1.25e-01-6.599behindFound by Maurizio Morandi in April 2008.
Triangles in a hexagon19s = 1.953+2.030463535−7.75e-02-3.966behindFound by Alex Adrián Nieto in April 2026.
Triangles in a hexagon20s = 1.97591+2.014862326−3.90e-02-1.971behindFound by Aaden Abraham in April 2026.
Triangles in a hexagon21s = 1.99869+2.037276498−3.86e-02-1.931behindFound by Haowei Lin in July 2026.
Triangles in a hexagon22s = 22.024941852−2.49e-02-1.247behind
Triangles in a hexagon23s = 22.024886606−2.49e-02-1.244behind
Triangles in a hexagon24s = 22.005069320−5.07e-03-0.253behind
Triangles in a hexagon25s = 13/6 = 2.16666+2.369602526−2.03e-01-9.366behindFound by Ignacio Vallejo in April 2026.
Triangles in a hexagon26s = 2.21991+2.488956045−2.69e-01-12.120behindFound by Ian Watson in April 2026.
Triangles in a hexagon27s = 2.29540+2.321522476−2.61e-02-1.138behindFound by Haowei Lin in July 2026.
Triangles in a hexagon28s = 2.32251+2.509760049−1.87e-01-8.062behindFound by Jake Loyd in June 2026.
Triangles in a hexagon29s = 7/3 = 2.33333+2.505569767−1.72e-01-7.382behindFound by Ignacio Vallejo in April 2026.
Triangles in a hexagon30s = 19/8 = 2.3752.425186837−5.02e-02-2.113behindFound by Ignacio Vallejo in April 2026.
Triangles in a hexagon31s = 12/5 = 2.42.525110655−1.25e-01-5.213behindFound by Emerson Connelly in April 2026.
Triangles in a hexagon32s = 2.46104+2.476981290−1.59e-02-0.648behindFound by Haowei Lin in July 2026.
Triangles in a hexagon33s = 2.49038+2.674458587−1.84e-01-7.392behindFound by Jake Loyd in June 2026.
Triangles in a hexagon34s = 5/2 = 2.52.588930502−8.89e-02-3.557reproducedFound by Emerson Connelly in April 2026.
Triangles in a hexagon35s = 5/2 = 2.52.687681247−1.88e-01-7.507behindFound by Emerson Connelly in April 2026.
Triangles in a hexagon36s = 2.58307+2.680097390−9.70e-02-3.756behindFound by Aristotle Papowitz in July 2026.
Triangles in a hexagon37s = 2.61436+2.624780359−1.04e-02-0.399behindFound by Jake Loyd in June 2026.
Triangles in a hexagon38s = 2.65998+2.721247662−6.13e-02-2.303behindFound by Jake Loyd in June 2026.
Triangles in a hexagon39s = 8/3 = 2.66666+2.749739466−8.31e-02-3.115behindFound by Emerson Connelly in April 2026.
Triangles in a hexagon40s = 2.71131+2.747496175−3.62e-02-1.335behindFound by Jake Loyd in June 2026.
Triangles in a hexagon41s = 2.73692+2.803784243−6.69e-02-2.443behindFound by Jake Loyd in June 2026.
Triangles in a hexagon42s = 11/4 = 2.752.921976356−1.72e-01-6.254behindFound by Maurizio Morandi in May 2026.
Triangles in a hexagon43s = 14/5 =2.82.887427464−8.74e-02-3.122reproducedFound by Thomas Greenleaf in June 2026.
Triangles in a hexagon44s = 17/6 = 2.833+2.934083891−1.01e-01-3.556behindFound by Emerson Connelly in May 2026.
Triangles in a hexagon45s = 17/6 = 2.833+2.928084457−9.48e-02-3.345behindFound by Emerson Connelly in May 2026.
Triangles in a hexagon46s = 2.88830+2.962396157−7.41e-02-2.565behindFound by Jake Loyd in June 2026.
Triangles in a hexagon47s = 35/12 = 2.917+2.944404609−2.77e-02-0.951behindFound by Emerson Connelly in May 2026.
Triangles in a hexagon48s = 47/16 =2.93753.016661043−7.92e-02-2.695behindFound by Thomas Greenleaf in June 2026.
Triangles in a hexagon49s = 2.97693+3.020148007−4.32e-02-1.452behindFound by Thomas Greenleaf in June 2026.
Triangles in a hexagon50s = 32.999355618+6.44e-040.021beaten
Triangles in a hexagon51s = 33.008688413−8.69e-03-0.290behind
Triangles in a hexagon52s = 33.033233800−3.32e-02-1.108behind
Triangles in a hexagon53s = 33.011346630−1.13e-02-0.378behind
Triangles in a hexagon54s = 33.016921735−1.69e-02-0.564behind
Triangles in a pentagon2s = √(6/(3+√5)) s = 1.070+1.070466283−1.36e-08-0.000reproduced
Triangles in a pentagon3s = 1.143+1.143516936−5.17e-04-0.045reproducedFound by Maurizio Morandi in August 2012.
Triangles in a pentagon4s = 1.199+1.199266482−2.66e-04-0.022reproducedFound by Maurizio Morandi in July 2012.
Triangles in a pentagon5s = 1 + 2sin(12°)/√3 s = 1.240+1.240075764−7.58e-05-0.006reproducedFound by Erich Friedman in March 2012.
Triangles in a pentagon6s = 1.393+1.393620342−6.20e-04-0.045reproducedFound by Dominik Kamp in April 2026.
Triangles in a pentagon7s = 1.581+1.633913311−5.29e-02-3.347behindFound by David W. Cantrell in July 2012.
Triangles in a pentagon8s = 1.659+1.659337866−3.38e-04-0.020reproducedFound by Maurizio Morandi in July 2012.
Triangles in a pentagon9s = 1.767+1.769616105−2.62e-03-0.148behindFound by Maurizio Morandi in July 2012. Improved slightly by David W. Cantrell in August 2012.
Triangles in a pentagon10s = 1.815+1.852813440−3.78e-02-2.083behindFound by Timo Berthold et al in January 2026.
Triangles in a pentagon11s = 1.871+1.873483094−2.48e-03-0.133behindFound by Timo Berthold et al in January 2026.
Triangles in a pentagon12s = 1.973+2.001972361−2.90e-02-1.468behindFound by Ignacio Vallejo in March 2026.
Triangles in a pentagon13s = 2.017+2.021738631−4.74e-03-0.235behindFound by Timo Berthold et al in January 2026.
Triangles in a pentagon14s = 2.088+2.092245507−4.25e-03-0.203behindFound by Ignacio Vallejo in April 2026.
Triangles in a pentagon15s = 2.123+2.177914918−5.49e-02-2.587behindFound by Ignacio Vallejo in March 2026.
Triangles in a pentagon16s = 2.17596+2.180115810−4.16e-03-0.191behindFound by Jake Loyd in June 2026.
Triangles in a pentagon17s = 2.23656+2.457135273−2.21e-01-9.862behindFound by Jake Loyd in June 2026.
Triangles in a pentagon18s = 2.29381+2.500196039−2.06e-01-8.998behindFound by Jake Loyd in June 2026.
Triangles in a pentagon19s = 2.344+2.357099469−1.31e-02-0.559behindFound by Ignacio Vallejo in March 2026.
Triangles in a pentagon20s = 2.43345+2.638116294−2.05e-01-8.411behindFound by Jake Loyd in June 2026.
Triangles in a pentagon21s = 2.479+2.724816658−2.46e-01-9.916behindFound by Ignacio Vallejo in March 2026.
Triangles in a pentagon22s = 2.56740+2.747701985−1.80e-01-7.023behindFound by Ian Watson in April 2026.
Triangles in a pentagon23s = 2.61825+2.819142309−2.01e-01-7.673behindFound by Jake Loyd in June 2026.
Triangles in a pentagon24s = 2.66641+2.716604520−5.02e-02-1.882behindFound by Ian Watson in April 2026.
Triangles in a pentagon25s = 2.71860+2.761110703−4.25e-02-1.564behindFound by Jake Loyd in June 2026.
Triangles in a pentagon26s = 2.76865+3.005496731−2.37e-01-8.555behindFound by Jake Loyd in June 2026.
Triangles in a pentagon27s = 2.81741+3.065796954−2.48e-01-8.816behindFound by Jake Loyd in June 2026.
Triangles in a pentagon28s = 2.86636+3.107115287−2.41e-01-8.399behindFound by Aristotle Papowitz in July 2026.
Triangles in a pentagon29s = 2.90240+2.939073459−3.67e-02-1.264behindFound by Aristotle Papowitz in July 2026.
Triangles in a pentagon30s = 2.95014+3.135604733−1.85e-01-6.287behindFound by Aristotle Papowitz in July 2026.
Triangles in a pentagon31s = 2.98366+3.209763990−2.26e-01-7.578behindFound by Jake Loyd in June 2026.
Triangles in a pentagon32s = 3.02686+3.220653002−1.94e-01-6.402behindFound by Jake Loyd in June 2026.
Triangles in a pentagon33s = 3.06583+3.284466901−2.19e-01-7.131behindFound by Jake Loyd in June 2026.
Triangles in a pentagon34s = 3.11073+3.423547553−3.13e-01-10.056behindFound by Aristotle Papowitz in July 2026.
Triangles in a pentagon35s = 3.14843+3.214641893−6.62e-02-2.103behindFound by Aristotle Papowitz in July 2026.
Triangles in a pentagon36s = 3.17473+3.493379847−3.19e-01-10.037behindFound by Aristotle Papowitz in July 2026.
Triangles in a pentagon37s = 3.21120+3.313209733−1.02e-01-3.177behindFound by Jake Loyd in June 2026.
Triangles in a pentagon38s = 3.24851+3.529893689−2.81e-01-8.662behindFound by Jake Loyd in June 2026.
Triangles in a pentagon39s = 3.29219+3.380625198−8.84e-02-2.686behindFound by Jake Loyd in June 2026.
Triangles in a pentagon40s = 3.32605+3.569264393−2.43e-01-7.312behindFound by Jake Loyd in June 2026.
Triangles in a pentagon41s = 3.36740+3.719539891−3.52e-01-10.457behindFound by Thomas Greenleaf in June 2026.
Triangles in a pentagon42s = 3.42505+3.510178518−8.51e-02-2.485behindFound by Aristotle Papowitz in July 2026.
Triangles in a pentagon43s = 3.46433+3.560719198−9.64e-02-2.782behindFound by Aristotle Papowitz in July 2026.
Triangles in a pentagon44s = 3.51261+3.567905542−5.53e-02-1.574behindFound by Emerson Connelly in May 2026.
Triangles in a pentagon45s = 3.51261+3.835661562−3.23e-01-9.197behindFound by Emerson Connelly in May 2026.
Triangles in a pentagon46s = 3.61491+3.819481681−2.05e-01-5.659behindFound by Emerson Connelly in May 2026.
Triangles in a pentagon47s = 3.65879+3.731906191−7.31e-02-1.998behindFound by Aapo Lipponen in July 2026.
Triangles in a pentagon48s = 3.67605+3.910834665−2.35e-01-6.387behindFound by Thomas Greenleaf in June 2026.
Triangles in a pentagon49s = 3.72296+3.805205449−8.22e-02-2.209behindFound by Emerson Connelly in May 2026.
Triangles in a pentagon50s = 3.75988+3.845433192−8.56e-02-2.275behindFound by Emerson Connelly in May 2026.
Triangles in a square2s = √6/2 = 1.224+1.224744896−2.48e-08-0.000reproduced
Triangles in a square3s = √3/2+√6/4 = 1.478+1.478397856−1.67e-08-0.000reproducedFound by Erich Friedman in 1996.
Triangles in a square4s = 1+1/√3 = 1.577+1.577350270−6.31e-10-0.000reproducedFound by Erich Friedman in 1996.
Triangles in a square5s = 1.803+1.803169109−1.69e-04-0.009reproducedFound by Erich Friedman in 1996.
Triangles in a square6s = 9/2–3√3/2 = 1.901+1.919465812−1.75e-02-0.923behindFound by Erich Friedman in 1996.
Triangles in a square7s = 22.000000036−3.58e-08-0.000reproducedFound by Erich Friedman in 1996.
Triangles in a square8s = 3√3/2–1/2 = 2.098+2.224624559−1.27e-01-6.032behindFound by Erich Friedman in 1996.
Triangles in a square9s = 2.287+2.289266167−2.27e-03-0.099behindFound by Maurizio Morandi in July 2008.
Triangles in a square10s = 2.377+2.463731018−8.67e-02-3.649behindFound by David W. Cantrell in July 2002.
Triangles in a square11s = 2.490+2.498910774−8.91e-03-0.358behindFound by Maurizio Morandi in June 2008.
Triangles in a square12s = 2.558+2.569612422−1.16e-02-0.454behindFound by Dominik Kamp in April 2026.
Triangles in a square13s = 2.595+2.598870074−3.87e-03-0.149behindFound by David W. Cantrell in July 2002.
Triangles in a square14s = 2.726+2.731820858−5.82e-03-0.214behindFound by David W. Cantrell in July 2002.
Triangles in a square15s = 2.82989+2.839786596−9.90e-03-0.350behindFound by Jake Loyd in June 2026.
Triangles in a square16s = 2.9000+2.944314789−4.43e-02-1.528behindFound by Ian Watson in April 2026.
Triangles in a square17s = 2.982+3.025526130−4.35e-02-1.460behindFound by Maurizio Morandi in July 2008.
Triangles in a square18s = 3.051+3.302796281−2.52e-01-8.253behindFound by Maurizio Morandi in July 2008.
Triangles in a square19s = 3.12929+3.411704712−2.82e-01-9.025behindFound by Jake Loyd in June 2026.
Triangles in a square20s = 3.2305+3.381776958−1.51e-01-4.683behindFound by Ian Watson in April 2026.
Triangles in a square21s = 3.31102+3.505678971−1.95e-01-5.879behindFound by Thomas Schadt in June 2026.
Triangles in a square22s = 3.3757+3.554802921−1.79e-01-5.306behindFound by Ian Watson in April 2026.
Triangles in a square23s = 3.4311+3.548703081−1.18e-01-3.428behindFound by Ian Watson in April 2026.
Triangles in a square24s = 3.46780+3.513278815−4.55e-02-1.311behindFound by Thomas Schadt in June 2026.
Triangles in a square25s = 3.537+3.893713646−3.57e-01-10.085behindFound by David W. Cantrell in August 2012.
Triangles in a square26s = 3.575+3.984607941−4.10e-01-11.458behindFound by Maurizio Morandi in September 2008.
Triangles in a square27s = 3.6726+4.014139333−3.42e-01-9.300behindFound by Ian Watson in April 2026.
Triangles in a square28s = 3.75707+4.019373683−2.62e-01-6.982behindFound by Jake Loyd in June 2026.
Triangles in a square29s = 3.81711+4.315022684−4.98e-01-13.044behindFound by Jake Loyd in June 2026.
Triangles in a square30s = 3.86619+4.269536507−4.03e-01-10.433behindFound by Jake Loyd in June 2026.
Triangles in a square31s = 3.93107+4.033466368−1.02e-01-2.605behindFound by Jake Loyd in June 2026.
Triangles in a square32s = 3.97880+4.342155148−3.63e-01-9.132behindFound by Jake Loyd in June 2026.
Triangles in a square33s = 4.05164+4.290365125−2.39e-01-5.892behindFound by Jake Loyd in June 2026.
Triangles in a square34s = 4.09088+4.192091411−1.01e-01-2.474behindFound by Jake Loyd in June 2026.
Triangles in a square35s = 4.14123+4.331232354−1.90e-01-4.588behindFound by Jake Loyd in June 2026.
Triangles in a square36s = 4.20791+4.261177864−5.33e-02-1.266behindFound by Jake Loyd in June 2026.
Triangles in a square37s = 4.26872+4.508744211−2.40e-01-5.623behindFound by Thomas Schadt in July 2026.
Triangles in a square38s = 4.32008+4.419880603−9.98e-02-2.310behindFound by Thomas Schadt in July 2026.
Triangles in a square39s = 4.36792+4.440336806−7.24e-02-1.658behindFound by Jake Loyd in June 2026.
Triangles in a square40s = 4.41057+4.452001968−4.14e-02-0.939behindFound by Thomas Schadt in July 2026.
Triangles in a square41s = 4.46431+4.567511644−1.03e-01-2.312behindFound by Thomas Schadt in July 2026.
Triangles in a square42s = 4.51172+4.615238222−1.04e-01-2.294behindFound by Thomas Schadt in July 2026.
Triangles in a square43s = 4.55033+4.714954195−1.65e-01-3.618behindFound by Thomas Schadt in June 2026.
Triangles in a square44s = 4.60023+5.010070027−4.10e-01-8.909behindFound by Thomas Schadt in June 2026.
Triangles in a square45s = 4.67745+4.774855941−9.74e-02-2.082behindFound by Thomas Schadt in June 2026.
Triangles in a square46s = 4.72960+5.195973433−4.66e-01-9.861behindFound by Thomas Schadt in June 2026.
Triangles in a square47s = 4.78204+5.197357023−4.15e-01-8.685behindFound by Thomas Schadt in June 2026.
Triangles in a square48s = 4.82632+5.080159701−2.54e-01-5.259behindFound by Thomas Schadt in June 2026.
Triangles in a square49s = 4.87132+5.198058629−3.27e-01-6.707behindFound by Thomas Schadt in June 2026.
Triangles in a square50s = 4.92191+5.066031565−1.44e-01-2.928behindFound by Thomas Schadt in June 2026.
Triangles in a tan2s = √3 = 1.73205+1.732050808−6.93e-10-0.000reproduced
Triangles in a tan3s = (√3+1)/√2 = 1.93185+1.931851653−7.73e-10-0.000reproduced
Triangles in a tan4s = (3+√3)/2 = 2.36602+2.366025422−1.78e-08-0.000reproducedFound by Jonathan Viquerat in May 2026.
Triangles in a tan5s = (3√2+√6+2√3)/4 = 2.53905+2.539058053−4.13e-08-0.000reproducedFound by Jonathan Viquerat in May 2026.
Triangles in a tan6s = √2+√(3/2) = 2.63895+2.638958446−1.21e-08-0.000reproducedFound by Jonathan Viquerat in May 2026.
Triangles in a tan7s = 2.78972+2.789728398−8.40e-06-0.000reproducedFound by Jonathan Viquerat in May 2026.
Triangles in a tan8s = 3.07313+3.156596587−8.35e-02-2.716behindFound by Jonathan Viquerat in May 2026.
Triangles in a tan9s = 3.18252+3.267161840−8.46e-02-2.660behindFound by Jonathan Viquerat in May 2026.
Triangles in a tan10s = 3.34084+3.345955845−5.12e-03-0.153behindFound by Jonathan Viquerat in May 2026.
Triangles in a tan11s = 3.46951+3.575877864−1.06e-01-3.066behindFound by Jonathan Viquerat in May 2026.
Triangles in a tan12s = 3.62487+3.635081021−1.02e-02-0.282behindFound by Bhavithran Ananthan in July 2026.
Triangles in a tan13s = 3.71163+4.009754605−2.98e-01-8.032behindFound by Jonathan Viquerat in May 2026.
Triangles in a tan14s = 3.88268+4.137265158−2.55e-01-6.557behindFound by Jonathan Viquerat in May 2026.
Triangles in a tan15s = 3.98382+3.994828458−1.10e-02-0.276behindFound by Thomas Greenleaf in June 2026.
Triangles in a tan16s = 4.03901+4.500073861−4.61e-01-11.415behindFound by Thomas Greenleaf in June 2026.
Triangles in a tan17s = 4.20066+4.240875133−4.02e-02-0.957behindFound by Jonathan Viquerat in September 2026.
Triangles in a tan18s = 4.27120+4.504224902−2.33e-01-5.456behindFound by Thomas Greenleaf in June 2026.
Triangles in a tan19s = 4.45701+4.709635512−2.53e-01-5.668behindFound by Thomas Greenleaf in June 2026.
Triangles in a tan20s = 4.56124+4.569023563−7.78e-03-0.171behindFound by Bhavithran Ananthan in July 2026.
Triangles in a tan21s = 4.64141+5.049009415−4.08e-01-8.782behindFound by Akshaj Shandilya in July 2026.
Triangles in a tan22s = 4.73276+4.748527409−1.58e-02-0.333behindFound by Akshaj Shandilya in July 2026.
Triangles in a tan23s = 4.82958+5.301254194−4.72e-01-9.766behindFound by Jonathan Viquerat in September 2026.
Triangles in a tan24s = 4.88409+5.389725707−5.06e-01-10.353behindFound by Jonathan Viquerat in September 2026.
Triangles in a tan25s = 5.02418+5.121649609−9.75e-02-1.940behindFound by Jonathan Viquerat in September 2026.
Triangles in a tan26s = 5.10960+5.660837548−5.51e-01-10.788behindFound by Akshaj Shandilya in July 2026.
Triangles in a tan27s = 5.19773+5.344982967−1.47e-01-2.833behindFound by Akshaj Shandilya in July 2026.
Triangles in a tan28s = 5.32367+5.886567004−5.63e-01-10.573behindFound by Akshaj Shandilya in July 2026.
Triangles in a tan29s = 5.39194+5.895520742−5.04e-01-9.340behindFound by Found by Jonathan Viquerat in September 2026.
Triangles in a tan30s = 5.46057+5.555979684−9.54e-02-1.747behindFound by Found by Jonathan Viquerat in September 2026.
Triangles in a triangle2s = 22.000000001−8.00e-10-0.000reproduced
Triangles in a triangle3s = 22.000000001−8.00e-10-0.000reproduced
Triangles in a triangle4s = 22.000000001−8.00e-10-0.000reproduced
Triangles in a triangle6s = 13/8 + 3√13/8 = 2.977+2.977081784−5.58e-08-0.000reproducedFound by Maurizio Morandi in August 2008.
Triangles in a triangle7s = 33.000000001−1.20e-09-0.000reproduced
Triangles in a triangle8s = 33.000000001−1.20e-09-0.000reproduced
Triangles in a triangle9s = 33.019078613−1.91e-02-0.636behind
Triangles in a triangle10s = 7/2 = 3.53.500000660−6.60e-07-0.000reproducedFound by Erich Friedman in 1997.
Triangles in a triangle11s = 9/4 + 9√21/28 = 3.722+3.914702802−1.92e-01-5.151behindFound by Erich Friedman in 1997.
Triangles in a triangle12s = 2 + 2cos(π/9) = 3.879+4.000006947−1.21e-01-3.120behindFound by David W. Cantrell in July 2007.
Triangles in a triangle13s = 3.992+4.034847136−4.28e-02-1.073behindFound by Maurizio Morandi in May 2008.
Triangles in a triangle14s = 44.000000002−1.61e-09-0.000reproduced
Triangles in a triangle15s = 44.004188237−4.19e-03-0.105behind
Triangles in a triangle16s = 44.000705785−7.06e-04-0.018behind
Triangles in a triangle17s = 4.465+4.907462936−4.42e-01-9.910behindFound by Maurizio Morandi in May 2008.
Triangles in a triangle18s = 9/2 = 4.54.509380491−9.38e-03-0.208reproducedFound by Erich Friedman in 1997.
Triangles in a triangle19s = 14/3 = 4.666+5.037444734−3.71e-01-7.946behindFound by Maurizio Morandi in May 2008.
Triangles in a triangle20s = 33/8 + 9√21/56 = 4.861+5.052836292−1.91e-01-3.936behindFound by Maurizio Morandi in May 2008.
Triangles in a triangle21s = 4.923+5.083722668−1.61e-01-3.265behindFound by Maurizio Morandi in May 2008.
Triangles in a triangle22s = 4.996+5.009693136−1.37e-02-0.274behindFound by Maurizio Morandi in May 2008.
Triangles in a triangle23s = 55.001214387−1.21e-03-0.024behind
Triangles in a triangle24s = 55.074434771−7.44e-02-1.489behind
Triangles in a triangle25s = 55.000834280−8.34e-04-0.017behind
Triangles in a triangle26s = 5.406+6.056733033−6.51e-01-12.037behindFound by Joah Frenzley in April 2026.
Triangles in a triangle27s = 11/2 = 5.56.082965347−5.83e-01-10.599behindFound by Erich Friedman in 1997.
Triangles in a triangle28s = 11/2 = 5.56.088161692−5.88e-01-10.694behindFound by Erich Friedman in 1997.
Triangles in a triangle29s = 17/3 = 5.666+6.064777230−3.98e-01-7.026behindFound by David W. Cantrell in July 2007.
Triangles in a triangle30s = 23/4 = 5.756.088493934−3.38e-01-5.887behindFound by Maurizio Morandi in May 2008.
Triangles in a triangle31s = 5.90766+6.115278619−2.08e-01-3.514behindFound by Thomas Schadt in June 2026.
Triangles in a triangle32s = 5.94593+6.046561339−1.01e-01-1.692behindFound by Maurizio Morandi in May 2026.
Triangles in a triangle33s = 5.99759+6.011781171−1.42e-02-0.237behindFound by Maurizio Morandi in June 2026.
Triangles in a triangle34s = 66.014282296−1.43e-02-0.238behind
Triangles in a triangle35s = 66.160243934−1.60e-01-2.671behind
Triangles in a triangle36s = 66.171116757−1.71e-01-2.852behind
Triangles in a triangle37s = 19/3 = 6.333+7.023639648−6.90e-01-10.900behindFound by Ian Watson in April 2026.
Triangles in a triangle38s = 6.42823+6.564569889−1.36e-01-2.121behindFound by Thomas Schadt in June 2026.
Triangles in a triangle39s = 13/2 = 6.57.058360002−5.58e-01-8.590behindFound by Erich Friedman in April 2026.
Triangles in a triangle40s = 13/2 = 6.56.862321792−3.62e-01-5.574behindFound by Erich Friedman in April 2026.
Triangles in a triangle41s = 20/3 = 6.666+7.013992339−3.47e-01-5.210behindFound by Emerson Connelly in May 2026.
Triangles in a triangle42s = 27/4 = 6.756.793316114−4.33e-02-0.642behindFound by Emerson Connelly in May 2026.
Triangles in a triangle43s = 34/5 = 6.87.053915075−2.54e-01-3.734behindFound by Emerson Connelly in May 2026.
Triangles in a triangle44s = 6.93076+7.020707187−8.99e-02-1.298behindFound by Thomas Schadt in June 2026.
Triangles in a triangle45s = 6.95922+7.021285800−6.21e-02-0.892behindFound by Maurizio Morandi in May 2026.
Triangles in a triangle46s = 6.99837+7.022019976−2.36e-02-0.338behindFound by Maurizio Morandi in June 2026.
Triangles in a triangle47s = 77.020760072−2.08e-02-0.297behind
Triangles in a triangle48s = 77.026659126−2.67e-02-0.381behind
Triangles in a triangle49s = 77.205708941−2.06e-01-2.939behind
Triangles in a triangle50s = 7 + √21/14 = 7.32732+8.020720352−6.93e-01-9.463behindFound by Maurizio Morandi in May 2026.
Triangles in an L2s = √3/2 = .86602+0.866025404−3.46e-10-0.000reproduced
Triangles in an L3s = √3/2 = .86602+0.866025404−3.46e-10-0.000reproduced
Triangles in an L4s = .92423+0.924231435−1.44e-06-0.000reproducedFound by Jonathan Viquerat in June 2026.
Triangles in an L5s = 11.000000018−1.79e-08-0.000reproducedFound by Jonathan Viquerat in June 2026.
Triangles in an L6s = 1.12037+1.125906072−5.54e-03-0.494behindFound by Jonathan Viquerat in June 2026.
Triangles in an L7s = 1.17127+1.223528562−5.23e-02-4.462behindFound by Jonathan Viquerat in June 2026.
Triangles in an L8s = 1.27527+1.300648725−2.54e-02-1.990behindFound by Jonathan Viquerat in June 2026.
Triangles in an L9s = 1.32893+1.356526897−2.76e-02-2.077behindFound by Jonathan Viquerat in June 2026.
Triangles in an L10s = 1.39370+1.396649254−2.95e-03-0.212behindFound by Jonathan Viquerat in June 2026.
Triangles in an L11s = 1.46116+1.535195347−7.40e-02-5.067behindFound by Jonathan Viquerat in June 2026.
Triangles in an L12s = 3/2 = 1.51.501911067−1.91e-03-0.127reproducedFound by Jonathan Viquerat in June 2026.
Triangles in an L13s = 1.56571+1.705853189−1.40e-01-8.951behindFound by Jonathan Viquerat in June 2026.
Triangles in an L14s = 1.62225+1.700919893−7.87e-02-4.849behindFound by Jonathan Viquerat in June 2026.
Triangles in an L15s = 1.68012+1.717661220−3.75e-02-2.234behindFound by Jonathan Viquerat in June 2026.
Triangles in an L16s = 1.72307+1.728376399−5.31e-03-0.308behindFound by Jonathan Viquerat in June 2026.
Triangles in an L17s = 1.73204+1.920072632−1.88e-01-10.856behindFound by Jonathan Viquerat in June 2026.
Triangles in an L18s = 1.75029+1.786626398−3.63e-02-2.076behindFound by Jonathan Viquerat in June 2026.
Triangles in an L19s = 1.82181+1.977609146−1.56e-01-8.552behindFound by Jonathan Viquerat in June 2026.
Triangles in an L20s = 1.86706+1.873718913−6.66e-03-0.357behindFound by Jonathan Viquerat in June 2026.
Triangles in an octagon2s = √3/√(4+2√2) = .66282+0.662827157−8.60e-09-0.000reproduced
Triangles in an octagon3s = .73651+0.736539682−2.97e-05-0.004behindFound by Ignacio Vallejo in March 2026.
Triangles in an octagon4s = .77731+0.777317157−7.16e-06-0.001reproducedFound by Timo Berthold et al in May 2026.
Triangles in an octagon5s = .80366+0.803666304−6.30e-06-0.001reproducedFound by Nicolas Campailla in May 2026.
Triangles in an octagon6s = .81574+0.824455477−8.72e-03-1.068behindFound by Ignacio Vallejo in March 2026.
Triangles in an octagon7s = .92453+0.969932888−4.54e-02-4.911behindFound by Ignacio Vallejo in March 2026.
Triangles in an octagon8s = .98777+0.988425486−6.55e-04-0.066behindFound by Timo Berthold et al in May 2026.
Triangles in an octagon9s = 1.00871+1.066916270−5.82e-02-5.770behindFound by Grant Mowry in April 2026.
Triangles in an octagon10s = 1.07515+1.134919590−5.98e-02-5.559behindFound by Jake Loyd in May 2026.
Triangles in an octagon11s = 1.14562+1.146569577−9.50e-04-0.083behindFound by Grant Mowry in April 2026.
Triangles in an octagon12s = 1.19914+1.228581139−2.94e-02-2.455behindFound by Timo Berthold et al in May 2026.
Triangles in an octagon13s = 1.23726+1.249880337−1.26e-02-1.020behindFound by Jake Loyd in June 2026.
Triangles in an octagon14s = 1.27629+1.278947709−2.66e-03-0.208behindFound by Jake Loyd in June 2026.
Triangles in an octagon15s = 1.30240+1.305677155−3.28e-03-0.252behindFound by Timo Berthold et al in May 2026.
Triangles in an octagon16s = 1.34566+1.395743971−5.01e-02-3.722behindFound by Jake Loyd in June 2026.
Triangles in an octagon17s = 1.38854+1.391069779−2.53e-03-0.182behindFound by Jake Loyd in June 2026.
Triangles in an octagon18s = 1.41763+1.507982700−9.04e-02-6.374behindFound by Jake Loyd in June 2026.
Triangles in an octagon19s = 1.46678+1.568773516−1.02e-01-6.954behindFound by Jake Loyd in June 2026.
Triangles in an octagon20s = 1.49689+1.579385911−8.25e-02-5.511behindFound by Jake Loyd in June 2026.
Triangles in an octagon21s = 1.52519+1.538065539−1.29e-02-0.844behindFound by Jake Loyd in June 2026.
Triangles in an octagon22s = 1.55435+1.625824716−7.15e-02-4.598behindFound by Jake Loyd in June 2026.
Triangles in an octagon23s = 1.58348+1.662261376−7.88e-02-4.975behindFound by Jake Loyd in June 2026.
Triangles in an octagon24s = 1.60180+1.657214572−5.54e-02-3.460behindFound by Jake Loyd in June 2026.
Triangles in an octagon25s = 1.63703+1.801539545−1.65e-01-10.049behindFound by Jake Loyd in June 2026.
Triangles in an octagon26s = 1.67455+1.700087511−2.55e-02-1.525behindFound by Jake Loyd in June 2026.
Triangles in an octagon27s = 1.70616+1.731187639−2.50e-02-1.467behindFound by Jake Loyd in June 2026.
Triangles in an octagon28s = 1.73796+1.812222981−7.43e-02-4.273behindFound by Jake Loyd in June 2026.
Triangles in an octagon29s = 1.75285+1.770836712−1.80e-02-1.026behindFound by Jake Loyd in June 2026.
Triangles in an octagon30s = 1.77911+1.863331625−8.42e-02-4.734behindFound by Jake Loyd in June 2026.
Triangles in an octagon31s = 1.80338+1.913852407−1.10e-01-6.126behindFound by Aristotle Papowitz in July 2026.
Triangles in an octagon32s = 1.82994+1.839199819−9.26e-03-0.506behindFound by Aristotle Papowitz in July 2026.
Triangles in an octagon33s = 1.84789+1.939430314−9.15e-02-4.954behindFound by Aristotle Papowitz in July 2026.
Triangles in an octagon34s = 1.86454+1.889661587−2.51e-02-1.347behindFound by Aristotle Papowitz in July 2026.
Triangles in an octagon35s = 1.89051+1.924680673−3.42e-02-1.807behindFound by Aristotle Papowitz in July 2026.
Triangles in an octagon36s = 1.92667+1.974396302−4.77e-02-2.477behindFound by Aristotle Papowitz in July 2026.
Triangles in an octagon37s = 1.95615+1.995255032−3.91e-02-1.999behindFound by Aristotle Papowitz in July 2026.

Data as of 2026-09-13 17:36 UTC. Every value is certified by an independent validator; none is a claim of optimality. Nothing has been submitted to the page.