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 A179449 #12 Feb 16 2025 08:33:12 %S A179449 3,1,8,3,0,5,0,0,9,3,7,5,0,8,7,6,2,6,4,9,6,1,7,7,6,3,8,0,2,8,6,3,4,9, %T A179449 0,1,8,9,9,7,4,2,3,5,0,1,6,1,8,6,4,2,8,1,5,5,3,7,9,2,8,1,4,4,1,2,2,8, %U A179449 2,9,4,7,6,5,0,9,1,4,6,2,5,2,4,3,9,9,3,9,9,6,5,0,8,8,4,0,7,1,8,7,6,2,7,0,4 %N A179449 Decimal expansion of the volume of great icosahedron with edge length 1. %C A179449 Great icosahedron: 20 faces, 12 vertices, and 30 edges. %H A179449 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GreatIcosahedron.html">Great Icosahedron</a> %H A179449 Wikipedia, <a href="http://en.wikipedia.org/wiki/Great_icosahedron">Great Icosahedron</a> %H A179449 <a href="/index/Al#algebraic_02">Index entries for algebraic numbers, degree 2</a> %F A179449 Digits of 5/12 * (3-sqrt(5)). %e A179449 0.31830500937508762649617763802863490189974235016186428155379281441228294... %t A179449 RealDigits[N[5*(Sqrt[5]-3)/12, 105]][[1]] %Y A179449 Cf. A010527, A102208, A179290, A179292, A179294. %K A179449 nonn,cons,easy %O A179449 1,1 %A A179449 _Vladimir Joseph Stephan Orlovsky_, Jul 14 2010 %E A179449 Partially rewritten by _Charles R Greathouse IV_, Feb 02 2011