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 A338730 #20 Dec 04 2020 04:22:31
%S A338730 0,0,1,1,1,1,1,3,1,3,1,3,1,3,1,6,1,3,4,3,1,6,1,3,4,3,5,6,1,3,8,3,1,6,
%T A338730 5,3,4,3,5,6,6,3,8,3,1,11,5,3,4,3,10,6,1,3,8,8,1,12,5,3,9,3,5,12,1,8,
%U A338730 8,3,1,12,10,3,4,3,5,17,1,10,8,3,6,12,5,3,11,8,5,12,1,3
%N A338730 Generating function Sum_{n >= 1} a(n)*x^n = Sum_{k>=1} k*x^(k*(3*k+1)/2)/(1-x^k).
%C A338730 The OEIS contains many very similar sequences, but this one was missing.
%H A338730 Seiichi Manyama, <a href="/A338730/b338730.txt">Table of n, a(n) for n = 0..10000</a>
%o A338730 (PARI) my(N=66, x='x+O('x^N)); concat([0, 0], Vec(sum(k=1, N, k*x^(k*(3*k+1)/2)/(1-x^k)))) \\ _Seiichi Manyama_, Dec 03 2020
%Y A338730 Cf. A001227, A081757, A117277, A330889, A338731, A338732.
%K A338730 nonn
%O A338730 0,8
%A A338730 _N. J. A. Sloane_, Dec 02 2020