This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A273637 #17 Nov 16 2022 16:04:29 %S A273637 9,3,9,3,2,5,6,5,1,5,6,7,6,3,6,1,5,9,4,1,6,1,0,1,4,3,2,4,1,4,6,6,1,3, %T A273637 6,6,1,4,2,8,8,8,6,4,1,7,0,4,7,9,1,6,1,0,9,3,2,9,5,9,1,8,7,2,3,5,7,8, %U A273637 7,3,7,9,0,3,3,9,5,2,4,5,3,9,5,2,5,3 %N A273637 Decimal expansion of ((Pi*(3+sqrt(5))^2)/(60*sqrt(3)))^(1/3), the sphericity of the icosahedron. %H A273637 Wikipedia, <a href="http://en.wikipedia.org/wiki/Sphericity">Sphericity</a>. %H A273637 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %e A273637 0.93932565156763615941610143241466136614288864170479161093295918... %t A273637 RealDigits[Surd[(Pi (3+Sqrt[5])^2)/(60Sqrt[3]),3],10,120][[1]] (* _Harvey P. Dale_, Nov 16 2022 *) %o A273637 (PARI) default(realprecision, 50080); my(x=((Pi*(3+sqrt(5))^2)/(60*sqrt(3)))^(1/3)); for(k=1, 100, my(d=floor(x)); x=(x-d)*10; print1(d, ", ")) %Y A273637 Cf. A273633, A273634, A273635, A273636. %K A273637 nonn,cons %O A273637 0,1 %A A273637 _Felix Fröhlich_, May 27 2016