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 A371317 #12 Sep 08 2024 13:48:47
%S A371317 0,1,7,109,2767,97621,4411927,243200749,15823364767,1186906701061,
%T A371317 100841639699047,9571637343623389,1003836707927846767,
%U A371317 115277656980955696501,14386616557957088368567,1938794142849968447054029,280599557966128999505000767
%N A371317 E.g.f. satisfies A(x) = (exp(x) - 1)/(1 - A(x))^3.
%H A371317 <a href="/index/Res#revert">Index entries for reversions of series</a>
%F A371317 a(n) = Sum_{k=1..n} (4*k-2)!/(3*k-1)! * Stirling2(n,k).
%F A371317 E.g.f.: Series_Reversion( log(1 + x * (1 - x)^3) ). - _Seiichi Manyama_, Sep 08 2024
%o A371317 (PARI) a(n) = sum(k=1, n, (4*k-2)!/(3*k-1)!*stirling(n, k, 2));
%Y A371317 Cf. A052886, A371316.
%K A371317 nonn
%O A371317 0,3
%A A371317 _Seiichi Manyama_, Mar 18 2024