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%I #4 Oct 26 2019 15:34:19
%S 1,-2,-3,-1,-5,0,-7,-4,-3,0,-11,3,-13,0,0,3,-17,6,-19,5,0,0,-23,18,
%T -10,0,-10,7,-29,30,-31,-2,0,0,0,24,-37,0,0,30,-41,42,-43,11,15,0,-47,
%U 27,-21,20,0,13,-53,38,0,42,0,0,-59,60,-61,0,21,17,0,66,-67,17,0,70
%N Dirichlet g.f.: Product_{k>=2} 1 / (1 + k^(-s))^k.
%C Dirichlet inverse of A050368.
%F a(1) = 1; a(n) = -Sum_{d|n, d<n} A050368(n/d) * a(d).
%Y Cf. A006881 (positions of 0's), A050368, A316441, A328730.
%K sign
%O 1,2
%A _Ilya Gutkovskiy_, Oct 26 2019
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