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 A363777 #14 Jun 22 2023 07:20:49
%S A363777 1,-3,6,-10,15,-21,28,-36,42,-43,36,-18,-14,63,-132,224,-336,459,-578,
%T A363777 672,-714,671,-504,168,378,-1161,2184,-3419,4794,-6183,7396,-8169,
%U A363777 8169,-7014,4308,321,-7156,16311,-27636,40607,-54222,66924,-76572,80451,-75372,57883
%N A363777 Expansion of 1/(Sum_{k>=0} x^(k^3))^3.
%F A363777 a(0) = 1; a(n) = -(3/n) * Sum_{k=1..n} A363783(k) * a(n-k).
%o A363777 (PARI) my(N=50, x='x+O('x^N)); Vec(1/sum(k=0, N^(1/3), x^k^3)^3)
%Y A363777 Convolution inverse of A051343.
%Y A363777 Column k=3 of A363779.
%Y A363777 Cf. A363783.
%K A363777 sign,easy
%O A363777 0,2
%A A363777 _Seiichi Manyama_, Jun 21 2023