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 A339734 #5 Dec 15 2020 09:08:20
%S A339734 1,-8,-8,28,-8,56,-8,-64,28,56,-8,-168,-8,56,56,134,-8,-168,-8,-168,
%T A339734 56,56,-8,344,28,56,-64,-168,-8,-328,-8,-288,56,56,56,428,-8,56,56,
%U A339734 344,-8,-328,-8,-168,-168,56,-8,-728,28,-168,56,-168,-8,344,56,344,56,56,-8,792
%N A339734 Dirichlet g.f.: Product_{k>=2} 1 / (1 + k^(-s))^8.
%F A339734 a(1) = 1; a(n) = -Sum_{d|n, d < n} A339340(n/d) * a(d).
%F A339734 a(p^k) = A007259(k) for prime p.
%Y A339734 Cf. A007259, A316441, A339340, A339717, A339718, A339719, A339720, A339721, A339722, A339735.
%K A339734 sign
%O A339734 1,2
%A A339734 _Ilya Gutkovskiy_, Dec 14 2020