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 A328730 #5 Oct 26 2019 15:35:55
%S A328730 1,-2,-3,-3,-5,0,-7,0,-6,0,-11,9,-13,0,0,2,-17,12,-19,15,0,0,-23,18,
%T A328730 -15,0,-1,21,-29,30,-31,12,0,0,0,33,-37,0,0,30,-41,42,-43,33,30,0,-47,
%U A328730 30,-28,30,0,39,-53,38,0,42,0,0,-59,60,-61,0,42,14,0,66,-67,51,0,70
%N A328730 Dirichlet g.f.: Product_{k>=2} (1 - k^(-s))^k.
%C A328730 Dirichlet inverse of A050367.
%F A328730 a(1) = 1; a(n) = -Sum_{d|n, d<n} A050367(n/d) * a(d).
%Y A328730 Cf. A050367, A114592, A161918 (positions of 0's), A328731.
%K A328730 sign
%O A328730 1,2
%A A328730 _Ilya Gutkovskiy_, Oct 26 2019