A106998 Primes of the form 2x^2+xy+12y^2, with x and y nonnegative.

2, 67, 113, 173, 227, 307, 383, 433, 607, 673, 887, 907, 983, 1093, 1117, 1427, 1433, 1627, 1723, 1877, 1933, 2143, 2237, 2377, 2383, 2447, 2473, 2663, 2903, 2957, 3533, 3593, 4027, 4513, 4597, 4703, 4783, 4817, 4933, 5087, 5233, 5347, 5623

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

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

Crossrefs

Sequence in context: A139861 A065721 A030472 * A275114 A217599 A107214

Adjacent sequences: A106995 A106996 A106997 * A106999 A107000 A107001

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved