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 A371326 #15 Sep 09 2024 09:34:30
%S A371326 0,1,5,71,1606,50334,2017840,98597204,5684225640,377709287232,
%T A371326 28423701233784,2389343434217376,221907620769333648,
%U A371326 22565504728129558272,2493614778861026071584,297548320679718887153088,38128996565367754662297600,5222327925855459163424791680
%N A371326 E.g.f. satisfies A(x) = log(1 + x/(1 - A(x)))/(1 - A(x))^2.
%H A371326 <a href="/index/Res#revert">Index entries for reversions of series</a>
%F A371326 a(n) = Sum_{k=1..n} (n+3*k-2)!/(n+2*k-1)! * Stirling1(n,k).
%F A371326 E.g.f.: Series_Reversion( (1 - x) * (exp(x * (1 - x)^2) - 1) ). - _Seiichi Manyama_, Sep 09 2024
%o A371326 (PARI) a(n) = sum(k=1, n, (n+3*k-2)!/(n+2*k-1)!*stirling(n, k, 1));
%Y A371326 Cf. A370922, A371342.
%Y A371326 Cf. A370462.
%K A371326 nonn
%O A371326 0,3
%A A371326 _Seiichi Manyama_, Mar 19 2024