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 A328709 #4 Oct 26 2019 10:02:07
%S A328709 1,4,6,16,10,36,14,60,36,60,22,168,26,84,90,208,34,252,38,280,126,132,
%T A328709 46,696,100,156,200,392,58,660,62,692,198,204,210,1296,74,228,234,
%U A328709 1160,82,924,86,616,630,276,94,2640,196,700,306,728,106,1556,330
%N A328709 Dirichlet g.f.: Product_{k>=2} ((1 + k^(-s)) / (1 - k^(-s)))^k.
%C A328709 Dirichlet convolution of A050367 with A050368.
%F A328709 a(n) = Sum_{d|n} A050367(n/d) * A050368(d).
%Y A328709 Cf. A050367, A050368, A328707.
%K A328709 nonn
%O A328709 1,2
%A A328709 _Ilya Gutkovskiy_, Oct 26 2019