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 A292827 #3 Sep 24 2017 09:05:18 %S A292827 1,2,1,9,2,2,4,8,0,1,9,9,8,7,7,3,5,7,7,1,7,9,4,2,7,4,8,4,3,4,9,0,2,3, %T A292827 2,3,5,6,3,1,8,4,4,4,9,9,7,0,0,9,1,6,8,3,8,2,7,9,9,5,2,4,8,1,6,3,0,7, %U A292827 8,2,2,9,7,9,9,3,8,0,2,8,4,6,2,4,9,2,4,2,8,7,7,2,8,3,1,1,6,7,4,5,0,8,3,8,7 %N A292827 Decimal expansion of Product_{k>=1} (1 + exp(-Pi*(2*k-1)/2)). %F A292827 Equals 2^(1/16) / (exp(Pi/48) * (sqrt(2)-1)^(1/4)). %F A292827 Equals A292819 / A292820. %e A292827 1.219224801998773577179427484349023235631844499700916838279952481630782... %t A292827 RealDigits[2^(1/16) / (E^(Pi/48) * (Sqrt[2]-1)^(1/4)), 10, 120][[1]] %Y A292827 Cf. A259147, A292819, A292823. %Y A292827 Cf. A292828, A292829. %K A292827 nonn,cons %O A292827 1,2 %A A292827 _Vaclav Kotesovec_, Sep 24 2017