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 A385650 #10 Jul 06 2025 10:39:49
%S A385650 1,4,112,8800,1586944,624664064,536747751424,1018102925488128,
%T A385650 4288756843049058304,40076190507961751044096,
%U A385650 826422665125748814526283776,37363126329930414708850363990016,3679235193626553722088195031035805696,784317990902751658071943156321585144528896
%N A385650 E.g.f. A(x) satisfies A(x) = exp( x*(A(x) + A(2*x))^2 ).
%F A385650 a(0) = 1; a(n) = (n-1)! * Sum_{i, j, k>=0 and i+j+k=n-1} (n-i) * (2^j+1) * (2^k+1) * a(i) * a(j) * a(k)/(i! * j! * k!).
%Y A385650 Cf. A385619, A385651.
%Y A385650 Cf. A168600, A385648.
%K A385650 nonn
%O A385650 0,2
%A A385650 _Seiichi Manyama_, Jul 06 2025