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 A364940 #17 Dec 01 2024 10:51:15
%S A364940 1,1,9,124,2525,68616,2338357,96004672,4616135001,254542038400,
%T A364940 15839013320801,1098078537291264,83940831427695541,
%U A364940 7014958697801657344,636298582947212386125,62261039244978489081856,6537251350698278868150833,733159568772947522820538368
%N A364940 E.g.f. satisfies A(x) = exp( x*A(x) / (1 - x*A(x))^3 ).
%H A364940 <a href="/index/Res#revert">Index entries for reversions of series</a>
%F A364940 a(n) = n! * Sum_{k=0..n} (n+1)^(k-1) * binomial(n+2*k-1,n-k)/k!.
%F A364940 E.g.f.: (1/x) * Series_Reversion( x*exp(-x/(1 - x)^3) ). - _Seiichi Manyama_, Sep 23 2024
%o A364940 (PARI) a(n) = n!*sum(k=0, n, (n+1)^(k-1)*binomial(n+2*k-1, n-k)/k!);
%Y A364940 Cf. A052873, A364939.
%Y A364940 Cf. A091695.
%K A364940 nonn
%O A364940 0,3
%A A364940 _Seiichi Manyama_, Aug 14 2023