A328709 - OEIS

%I #4 Oct 26 2019 10:02:07

%S 1,4,6,16,10,36,14,60,36,60,22,168,26,84,90,208,34,252,38,280,126,132,

%T 46,696,100,156,200,392,58,660,62,692,198,204,210,1296,74,228,234,

%U 1160,82,924,86,616,630,276,94,2640,196,700,306,728,106,1556,330

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

%C Dirichlet convolution of A050367 with A050368.

%F a(n) = Sum_{d|n} A050367(n/d) * A050368(d).

%Y Cf. A050367, A050368, A328707.

%K nonn

%O 1,2

%A _Ilya Gutkovskiy_, Oct 26 2019