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 A356883 #8 Sep 02 2022 18:06:48
%S A356883 1,0,2,3,-8,5,696,2527,-40144,-178407,8337880,76134971,-1781542344,
%T A356883 -24938260763,691630553264,14216543752335,-312910463346464,
%U A356883 -9343318015483471,195539694928047144,8145971436703039363,-142317653823753257560,-8498984155838272275459
%N A356883 E.g.f. satisfies: A(x)^2 * log(A(x)) = x * (exp(x*A(x)) - 1).
%F A356883 a(n) = n! * Sum_{k=0..floor(n/2)} (n-3*k+1)^(k-1) * Stirling2(n-k,k)/(n-k)!.
%o A356883 (PARI) a(n) = n!*sum(k=0, n\2, (n-3*k+1)^(k-1)*stirling(n-k, k, 2)/(n-k)!);
%Y A356883 Cf. A349560, A356785, A356788, A356789, A356882.
%Y A356883 Cf. A355763.
%K A356883 sign
%O A356883 0,3
%A A356883 _Seiichi Manyama_, Sep 02 2022