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 A366974 #9 Oct 30 2023 09:52:06
%S A366974 0,1,2,4,4,9,6,14,12,20,10,42,12,35,40,59,16,96,18,121,84,77,22,281,
%T A366974 80,104,156,281,28,521,30,407,264,170,406,1083,36,209,416,1418,40,
%U A366974 1514,42,1068,1632,299,46,3532,840,1923,884,1847,52,3824,2420,5377,1216,464,58
%N A366974 Expansion of Sum_{k >=1} x^(2*k)/(1-x^k)^(k+1).
%F A366974 a(n) = Sum_{d|n} binomial(d+n/d-2,d).
%F A366974 If p is prime, a(p) = p - 1.
%o A366974 (PARI) a(n) = sumdiv(n, d, binomial(d+n/d-2, d));
%Y A366974 Cf. A081543, A366975.
%Y A366974 Cf. A318636.
%K A366974 nonn
%O A366974 1,3
%A A366974 _Seiichi Manyama_, Oct 30 2023