A035258 Positive integers of the form 2x^2+xy-2y^2 (discriminant 17).

1, 2, 4, 8, 9, 13, 16, 17, 18, 19, 25, 26, 32, 34, 36, 38, 43, 47, 49, 50, 52, 53, 59, 64, 67, 68, 72, 76, 81, 83, 86, 89, 94, 98, 100, 101, 103, 104, 106, 117, 118, 121, 127, 128, 134, 136, 137, 144, 149, 151, 152, 153, 157, 162, 166, 169, 171, 172, 178

Offset

1,2

Comments

Also, indices of the nonzero terms in expansion of Dirichlet series Product_p (1-(Kronecker(m,p)+1)*p^(-s)+Kronecker(m,p)*p^(-2s))^(-1) for m= 17.

Links

Table of n, a(n) for n=1..59.

N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)

Prog

(PARI) m=17; select(x -> x, direuler(p=2, 101, 1/(1-(kronecker(m, p)*(X-X^2))-X)), 1) \\ Fixed by Andrey Zabolotskiy, Jul 30 2020

Crossrefs

Primes: A038889.

Cf. A035199.

Sequence in context: A010379 A010395 A136805 * A115813 A326672 A048300

Adjacent sequences: A035255 A035256 A035257 * A035259 A035260 A035261

Keyword

nonn

Author

N. J. A. Sloane

Extensions

Entry revised by N. J. A. Sloane, Jun 01 2014

More terms from Colin Barker, Jun 17 2014

Status

approved