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 A385651 #11 Jul 06 2025 10:39:42
%S A385651 1,8,640,150272,81879040,97446821888,252536538529792,
%T A385651 1441194498488532992,18238881125752291459072,
%U A385651 511646632486244583515095040,31662959021226253504069431721984,4295217009165735294411016058313900032,1268984197722535033624735101886101792489472
%N A385651 E.g.f. A(x) satisfies A(x) = exp( x*(A(x) + A(2*x))^3 ).
%F A385651 a(0) = 1; a(n) = (n-1)! * Sum_{i, j, k, l>=0 and i+j+k+l=n-1} (n-i) * (2^j+1) * (2^k+1) * (2^l+1) * a(i) * a(j) * a(k) * a(l)/(i! * j! * k! * l!).
%Y A385651 Cf. A385619, A385650.
%Y A385651 Cf. A168601, A385649.
%K A385651 nonn
%O A385651 0,2
%A A385651 _Seiichi Manyama_, Jul 06 2025