A106944 Primes of the form 3x^2-xy+6y^2, with x and y nonnegative.

3, 89, 151, 157, 379, 419, 593, 659, 677, 787, 853, 857, 977, 1069, 1103, 1181, 1297, 1493, 1523, 1531, 1571, 1723, 1787, 1871, 1993, 2131, 2383, 2441, 2503, 2543, 2647, 2833, 2897, 2927, 3011, 3019, 3527, 3631, 3779, 3923, 4001, 4021, 4057

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[3, -1, 6, 10000] (* see A106856 *)

Crossrefs

Sequence in context: A156737 A070018 A054682 * A142252 A159508 A073861

Adjacent sequences: A106941 A106942 A106943 * A106945 A106946 A106947

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved