A328710 Dirichlet g.f.: (1/2) * Product_{i>=1, j>=1} (1 + (i*j)^(-s)).

1, 2, 2, 4, 2, 8, 2, 10, 4, 8, 2, 22, 2, 8, 8, 19, 2, 22, 2, 22, 8, 8, 2, 56, 4, 8, 10, 22, 2, 40, 2, 38, 8, 8, 8, 71, 2, 8, 8, 56, 2, 40, 2, 22, 22, 8, 2, 128, 4, 22, 8, 22, 2, 56, 8, 56, 8, 8, 2, 132, 2, 8, 22, 73, 8, 40, 2, 22, 8, 40, 2, 202, 2, 8, 22, 22, 8, 40, 2, 128

Offset

1,2

Links

Table of n, a(n) for n=1..80.

Formula

Dirichlet g.f.: Product_{k>=2} (1 + k^(-s))^tau(k), where tau = A000005.

Crossrefs

Cf. A000005, A050368, A242649, A328711.

Sequence in context: A353214 A350062 A100577 * A018818 A157019 A359906

Adjacent sequences: A328707 A328708 A328709 * A328711 A328712 A328713

Keyword

nonn

Author

Ilya Gutkovskiy, Oct 26 2019

Status

approved