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 A362155 #14 Apr 10 2023 10:52:01
%S A362155 1,-1,4,2,46,221,1627,11312,83704,631433,4868920,38137757,302694082,
%T A362155 2428593929,19664122513,160464212831,1318266144163,10893680220326,
%U A362155 90486907158265,755060334587576,6326283013232206,53199259567645709,448846559987031064
%N A362155 Expansion of 1/(1 + x * (1-9*x)^(1/3)).
%F A362155 a(n) = (-1)^n * Sum_{k=0..n} 9^k * binomial((n-k)/3,k).
%F A362155 a(n) ~ 3^(2*n-3) / (Gamma(2/3) * n^(4/3)). - _Vaclav Kotesovec_, Apr 10 2023
%o A362155 (PARI) my(N=30, x='x+O('x^N)); Vec(1/(1+x*(1-9*x)^(1/3)))
%Y A362155 Cf. A039834, A362154.
%Y A362155 Cf. A004987, A362157, A362162.
%K A362155 sign,easy
%O A362155 0,3
%A A362155 _Seiichi Manyama_, Apr 09 2023