A339336 Dirichlet g.f.: Product_{k>=2} (1 + k^(-s))^4.

1, 4, 4, 10, 4, 20, 4, 24, 10, 20, 4, 60, 4, 20, 20, 51, 4, 60, 4, 60, 20, 20, 4, 156, 10, 20, 24, 60, 4, 116, 4, 100, 20, 20, 20, 206, 4, 20, 20, 156, 4, 116, 4, 60, 60, 20, 4, 360, 10, 60, 20, 60, 4, 156, 20, 156, 20, 20, 4, 396, 4, 20, 60, 190, 20, 116, 4, 60, 20, 116, 4, 580

Offset

1,2

Links

Table of n, a(n) for n=1..72.

Formula

a(p^k) = A022569(k) for prime p.

Crossrefs

Cf. A022569, A045778, A328706, A339319, A339335, A339337, A339338, A339339, A339340, A339341.

Sequence in context: A286779 A007426 A353267 * A319056 A369225 A050348

Adjacent sequences: A339333 A339334 A339335 * A339337 A339338 A339339

Keyword

nonn

Author

Ilya Gutkovskiy, Nov 30 2020

Status

approved