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 A371235 #10 Mar 16 2024 11:07:39
%S A371235 1,0,0,6,12,40,5220,41328,339360,28477440,489877920,7325176320,
%T A371235 501467630400,14323336634880,333439476289920,21001701037363200,
%U A371235 849627551212876800,27872303353627299840,1742879646852427791360,90170933394707691724800
%N A371235 E.g.f. satisfies A(x) = 1 - x^2*A(x)^5*log(1 - x*A(x)^2).
%F A371235 a(n) = (n!/(2*n+1)!) * Sum_{k=0..floor(n/3)} (2*n+k)! * |Stirling1(n-2*k,k)|/(n-2*k)!.
%o A371235 (PARI) a(n) = n!*sum(k=0, n\3, (2*n+k)!*abs(stirling(n-2*k, k, 1))/(n-2*k)!)/(2*n+1)!;
%Y A371235 Cf. A371233, A371234.
%Y A371235 Cf. A371230.
%K A371235 nonn
%O A371235 0,4
%A A371235 _Seiichi Manyama_, Mar 15 2024