A106999 Primes of the form 2x^2+xy+12y^2, with x and y any integer.

2, 13, 67, 103, 107, 113, 173, 227, 307, 317, 337, 383, 433, 487, 607, 673, 773, 887, 907, 977, 983, 1093, 1097, 1117, 1193, 1237, 1283, 1427, 1433, 1447, 1523, 1627, 1663, 1723, 1823, 1877, 1933, 1997, 2017, 2143, 2237, 2293, 2377, 2383, 2393

Offset

1,1

Comments

Discriminant=-95.

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

Union[QuadPrimes2[2, 1, 12, 10000], QuadPrimes2[2, -1, 12, 10000]] (* see A106856 *)

Crossrefs

Sequence in context: A037640 A137967 A045764 * A054566 A038144 A097977

Adjacent sequences: A106996 A106997 A106998 * A107000 A107001 A107002

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved