A106927 Primes of the form 2x^2+xy+8y^2, with x and y any integer.

2, 11, 23, 29, 53, 71, 107, 113, 137, 149, 179, 191, 197, 233, 239, 263, 281, 317, 347, 359, 389, 401, 431, 443, 449, 491, 557, 569, 599, 617, 641, 653, 659, 683, 701, 743, 809, 821, 827, 863, 911, 947, 953, 977, 1019, 1031, 1061, 1103, 1163, 1187, 1229

Offset

1,1

Comments

Discriminant=-63.

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, 8, 10000], QuadPrimes2[2, -1, 8, 10000]] (* see A106856 *)

Crossrefs

Sequence in context: A087340 A246622 A237813 * A158189 A218255 A256481

Adjacent sequences: A106924 A106925 A106926 * A106928 A106929 A106930

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved