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 A343966 #13 Nov 12 2022 20:35:46 %S A343966 8,7,5,8,0,5,6,6,5,9,8,9,8,4,0,2,6,0,2,7,5,6,7,3,1,9,5,7,8,5,0,5,6,4, %T A343966 1,9,0,3,8,2,5,0,0,0,2,0,1,0,3,8,9,7,2,3,6,0,8,9,5,8,6,0,2,6,1,7,2,3, %U A343966 9,8,8,5,1,3,1,2,3,7,5,4,0,5,3,5,4,0,0,1,8,3,0,8,0,7,5,5,0,5,4,5,8 %N A343966 Decimal expansion of (4/3)*(4*sqrt(2)-5). %C A343966 The optimal packing fraction of a rhombicuboctahedron is (4/3)*(4*sqrt(2)-5). %H A343966 Wikipedia, <a href="https://en.wikipedia.org/wiki/Rhombicuboctahedron">Rhombicuboctahedron</a> %e A343966 0.87580566598984026027567319578505641903825... %t A343966 RealDigits[N[(4/3)*(4*Sqrt[2] - 5), 100]][[1]] (* _Wesley Ivan Hurt_, Nov 12 2022 *) %o A343966 (Magma) SetDefaultRealField(RealField(100)); (4/3)*(4*Sqrt(2)-5); %Y A343966 Cf. A343964 (rhombicuboctahedron surface area). %Y A343966 Cf. A343965 (rhombicuboctahedron volume). %K A343966 nonn,cons %O A343966 0,1 %A A343966 _Wesley Ivan Hurt_, May 05 2021