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 A366975 #8 Oct 30 2023 09:52:01
%S A366975 0,0,1,2,3,5,5,9,8,14,9,25,11,27,24,40,15,65,17,75,55,65,21,176,44,90,
%T A366975 110,182,27,324,29,270,197,152,195,695,35,189,324,847,39,925,41,759,
%U A366975 1016,275,45,2215,377,1182,730,1365,51,2338,1418,3072,1025,434,57,7536,59
%N A366975 Expansion of Sum_{k >=1} x^(3*k)/(1-x^k)^(k+1).
%F A366975 a(n) = Sum_{d|n} binomial(d+n/d-3,d) for n > 1.
%F A366975 If p is prime, a(p) = p - 2.
%o A366975 (PARI) a(n) = if(n<2, 0, sumdiv(n, d, binomial(d+n/d-3, d)));
%Y A366975 Cf. A081543, A366974.
%Y A366975 Cf. A318636.
%K A366975 nonn
%O A366975 1,4
%A A366975 _Seiichi Manyama_, Oct 30 2023