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 A292823 #3 Sep 24 2017 09:04:43
%S A292823 7,8,4,6,8,6,0,7,5,5,6,6,3,5,7,5,8,1,6,5,8,7,5,8,6,0,1,7,4,9,3,7,8,0,
%T A292823 5,7,2,2,6,7,8,3,0,3,6,1,1,8,3,9,1,5,0,3,2,6,4,7,6,2,5,3,8,0,9,0,5,9,
%U A292823 8,5,4,8,1,9,2,6,2,1,1,7,5,1,8,2,7,1,5,6,8,1,4,9,1,7,2,2,2,9,0,8,4,2,4,1,0,1
%N A292823 Decimal expansion of Product_{k>=1} (1 - exp(-Pi*(2*k-1)/2)).
%F A292823 Equals 2^(1/16) * (sqrt(2)-1)^(1/4) * exp(-Pi/48).
%F A292823 Equals A259147 / A259148.
%e A292823 0.784686075566357581658758601749378057226783036118391503264762538090598...
%t A292823 RealDigits[2^(1/16) * (Sqrt[2]-1)^(1/4) * E^(-Pi/48), 10, 120][[1]]
%Y A292823 Cf. A259147, A292819, A292827.
%Y A292823 Cf. A292824, A292825, A292826.
%K A292823 nonn,cons
%O A292823 0,1
%A A292823 _Vaclav Kotesovec_, Sep 24 2017