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A328731 Dirichlet g.f.: Product_{k>=2} 1 / (1 + k^(-s))^k. 2

%I

%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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Last modified August 9 21:08 EDT 2022. Contains 356026 sequences. (Running on oeis4.)