A106996 - OEIS

A106996

Primes of the form 3x^2+xy+8y^2, with x and y any integer.

3, 37, 53, 97, 127, 167, 193, 223, 257, 293, 373, 523, 547, 563, 677, 683, 743, 787, 797, 827, 857, 863, 877, 953, 1063, 1123, 1153, 1307, 1367, 1553, 1637, 1667, 1693, 1747, 1777, 1913, 2003, 2027, 2083, 2203, 2207, 2273, 2333, 2347, 2423, 2617

(list; graph; refs; listen; history; text; internal format)

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[3, 1, 8, 10000], QuadPrimes2[3, -1, 8, 10000]] (* see A106856 *)

CROSSREFS

Sequence in context: A106103 A224471 A286637 * A338751 A300347 A047691

Adjacent sequences: A106993 A106994 A106995 * A106997 A106998 A106999

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved