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 A379912 #17 Jan 08 2025 02:40:45
%S A379912 1,2,23,541,19585,962901,59969227,4526706661,401724516641,
%T A379912 40994441922169,4729721311570411,608827327842480825,
%U A379912 86507217246635276065,13448830748996370988885,2270847762050485928361227,413849998079530364443224781,80967576778854924208520130241
%N A379912 E.g.f. A(x) satisfies A(x) = 1/(exp(-x*A(x)^3) - x*A(x)).
%H A379912 Seiichi Manyama, <a href="/A379912/b379912.txt">Table of n, a(n) for n = 0..314</a>
%F A379912 a(n) = n! * Sum_{k=0..n} (2*n+k+1)^(k-1) * binomial(2*n+k+1,n-k)/k!.
%o A379912 (PARI) a(n) = n!*sum(k=0, n, (2*n+k+1)^(k-1)*binomial(2*n+k+1, n-k)/k!);
%Y A379912 Cf. A377893, A379870, A379897.
%Y A379912 Cf. A377890, A377892, A379885.
%K A379912 nonn
%O A379912 0,2
%A A379912 _Seiichi Manyama_, Jan 05 2025