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 A306398 #20 Mar 01 2019 03:37:53
%S A306398 1,7,4,0,3,9,4,9,1,9,1,0,7,6,7,2,3,5,4,4,7,5,6,1,9,0,5,9,1,0,2,3,4,4,
%T A306398 8,1,8,9,1,3,8,4,4,9,3,8,4,3,4,5,2,1,4,8,0,8,6,9,0,1,9,2,3,8,4,7,7,1,
%U A306398 2,6,4,9,7,3,4,1,1,3,4,0,1,2,5,3,7,9,3,7,4,4,9,5,5,1,6,4,3,8,6,1,9,0,2,1,3,5
%N A306398 Decimal expansion of a constant related to the asymptotics of A324443.
%H A306398 Vaclav Kotesovec, <a href="/A306398/b306398.txt">Table of n, a(n) for n = 0..450</a>
%F A306398 Equals limit_{n->infinity} A324443(n) / (2^(n*(n+1)) * exp(Pi*n*(n+1)/2 - 3*n^2) * n^(2*n^2 + (Pi - 1)/2)).
%e A306398 0.174039491910767235447561905910234481891384493843452148086901923847712649...
%Y A306398 Cf. A324443.
%K A306398 nonn,cons
%O A306398 0,2
%A A306398 _Vaclav Kotesovec_, Mar 01 2019