A328999 Dirichlet g.f. = Product_{primes p == 1 (mod 12)} (1+p^(-s))^2/(1-p^(-s))^2) * Product_{primes p == +-5 (mod 12)} (1+p^(-2*s))/(1-p^(-2*s).

1, 4, 2, 4, 2, 4, 4, 0, 4, 4, 0, 0, 0, 4, 8, 4

Offset

0,2

Links

Table of n, a(n) for n=0..15.

Michael Baake and Peter A. B. Pleasants, Algebraic solution of the coincidence problem in two and three dimensions, Zeitschrift für Naturforschung A 50.8 (1995): 711-717. See page 714.

Example

The D.g.f. is 1 + 4/13^s + 2/25^s + 4/37^s + ... .

Crossrefs

Sequence in context: A178253 A209272 A105397 * A236185 A300004 A147973

Adjacent sequences: A328996 A328997 A328998 * A329000 A329001 A329002

Keyword

nonn,more

Author

N. J. A. Sloane, Nov 14 2019

Status

approved