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 A371855 #4 Apr 10 2024 09:14:59
%S A371855 1,8,1,2,8,0,4,9,5,4,1,1,0,9,5,4,1,5,5,9,6,5,3,4,2,5,7,7,9,3,3,8,3,6,
%T A371855 0,0,1,4,9,7,5,8,3,8,4,1,4,4,0,0,3,2,7,3,3,7,1,6,6,8,8,9,9,9,7,8,4,9,
%U A371855 5,9,6,2,1,7,6,9,3,6,4,5,6,0,8,0,9,1,8,0,0,6,8,3,6,1,6,9,2,1,5,0,1,8,0,7
%N A371855 Decimal expansion of Integral_{x=-oo..oo} exp(-x^4) dx.
%H A371855 <a href="/index/Ga#gamma_function">Index to sequences related to the Gamma function</a>
%H A371855 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%F A371855 Equals 2 * Gamma(5/4).
%F A371855 Equals 2 * A068467.
%F A371855 Equals A068466 / 2.
%e A371855 1.8128049541109541559653425779338360014975838...
%t A371855 RealDigits[2 Gamma[5/4], 10, 104][[1]]
%Y A371855 Cf. A002161, A068466, A068467.
%K A371855 nonn,cons
%O A371855 1,2
%A A371855 _Ilya Gutkovskiy_, Apr 09 2024