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A328707 Dirichlet g.f.: Product_{k>=2} (1 + k^(-s)) / (1 - k^(-s)). 1

%I #5 Oct 26 2019 10:02:01

%S 1,2,2,4,2,6,2,8,4,6,2,14,2,6,6,14,2,14,2,14,6,6,2,30,4,6,8,14,2,22,2,

%T 24,6,6,6,36,2,6,6,30,2,22,2,14,14,6,2,58,4,14,6,14,2,30,6,30,6,6,2,

%U 58,2,6,14,40,6,22,2,14,6,22,2,82,2,6,14,14,6,22,2,58

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

%C Dirichlet convolution of A001055 with A045778.

%F a(n) = Sum_{d|n} A001055(n/d) * A045778(d).

%Y Cf. A001055, A045778, A328709.

%K nonn

%O 1,2

%A _Ilya Gutkovskiy_, Oct 26 2019

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Last modified April 24 19:24 EDT 2024. Contains 371962 sequences. (Running on oeis4.)