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 A356787 #11 Aug 28 2022 04:24:51
%S A356787 1,0,2,3,116,630,24054,273000,11105072,207213552,9175467960,
%T A356787 245785969440,11954556125544,421832039016960,22609694372667024,
%U A356787 991695134898861120,58565049582761702400,3065736317041568378880,199024242549235933723200
%N A356787 E.g.f. satisfies A(x) = 1/(1 - x * A(x))^(x * A(x)^3).
%F A356787 a(n) = n! * Sum_{k=0..floor(n/2)} (n+2*k+1)^(k-1) * |Stirling1(n-k,k)|/(n-k)!.
%o A356787 (PARI) a(n) = n!*sum(k=0, n\2, (n+2*k+1)^(k-1)*abs(stirling(n-k, k, 1))/(n-k)!);
%Y A356787 Cf. A184949, A349559, A356786.
%K A356787 nonn
%O A356787 0,3
%A A356787 _Seiichi Manyama_, Aug 27 2022