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 A256155 #8 May 10 2021 04:35:28
%S A256155 1,8,5,6,3,1,4,6,5,6,3,6,1,0,1,1,4,7,2,7,4,7,5,3,5,4,2,3,2,2,6,9,2,8,
%T A256155 4,0,4,8,4,2,5,8,8,5,9,4,7,2,2,9,0,7,0,6,8,2,0,1,0,2,5,3,9,0,7,5,4,7,
%U A256155 6,3,7,5,6,4,7,4,6,5,1,0,0,1,9,7,1,5,7,0,7,2,9,6,0,4,2,1,5,1,9,3,0,3,9,4,5,1,9
%N A256155 Decimal expansion of a constant related to A074141.
%H A256155 Vaclav Kotesovec, <a href="/A256155/b256155.txt">Table of n, a(n) for n = 2..285</a>
%F A256155 Equals limit n->infinity A074141(n) / 2^n.
%F A256155 Equals Product_{k>=2} 1/(1-(k+1)/2^k). - _Vaclav Kotesovec_, May 10 2021
%e A256155 18.5631465636101147274753542322692840484258859472290706820102539...
%Y A256155 Cf. A074141, A293366.
%K A256155 nonn,cons
%O A256155 2,2
%A A256155 _Vaclav Kotesovec_, Mar 16 2015