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 A339705 #5 Dec 14 2020 10:28:50 %S A339705 1,-6,-6,9,-6,30,-6,10,9,30,-6,-24,-6,30,30,-30,-6,-24,-6,-24,30,30, %T A339705 -6,-84,9,30,10,-24,-6,-114,-6,0,30,30,30,-54,-6,30,30,-84,-6,-114,-6, %U A339705 -24,-24,30,-6,96,9,-24,30,-24,-6,-84,30,-84,30,30,-6,-24,-6,30,-24,11,30 %N A339705 Dirichlet g.f.: Product_{k>=2} (1 - k^(-s))^6. %F A339705 a(1) = 1; a(n) = -Sum_{d|n, d < n} A339321(n/d) * a(d). %F A339705 a(p^k) = A000729(k) for prime p. %Y A339705 Cf. A000729, A114592, A339321, A339701, A339702, A339703, A339704, A339706, A339707. %K A339705 sign %O A339705 1,2 %A A339705 _Ilya Gutkovskiy_, Dec 13 2020