A106947 Primes of the form 2x^2-xy+9y^2, with x and y nonnegative.

2, 37, 83, 101, 199, 223, 251, 313, 431, 547, 571, 719, 821, 839, 983, 1097, 1129, 1327, 1447, 1499, 1549, 1669, 1847, 1997, 2003, 2113, 2203, 2207, 2287, 2297, 2593, 2663, 3061, 3169, 3259, 3361, 3391, 3457, 3511, 3559, 3593, 3821, 3877

Offset

1,1

Comments

Discriminant=-71.

Links

Vincenzo Librandi and Ray Chandler, Table of n, a(n) for n = 1..10000 [First 1000 terms from Vincenzo Librandi]

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

Mathematica

QuadPrimes2[2, -1, 9, 10000] (* see A106856 *)

Crossrefs

Sequence in context: A107752 A055031 A041161 * A309429 A258896 A262182

Adjacent sequences: A106944 A106945 A106946 * A106948 A106949 A106950

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved