A106945 Primes of the form 2x^2+xy+9y^2, with x and y nonnegative.

2, 19, 233, 277, 311, 463, 641, 797, 829, 929, 941, 1019, 1303, 1381, 1399, 1511, 1709, 1733, 1753, 1777, 1933, 2063, 2089, 2273, 2549, 2707, 2713, 2777, 2971, 3083, 3323, 3347, 3529, 3767, 3907, 3943, 4013, 4019, 4289, 4451, 4621, 4729

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[2, 1, 9, 10000] (* see A106856 *)

Crossrefs

Sequence in context: A210986 A232525 A024227 * A211886 A125632 A124125

Adjacent sequences: A106942 A106943 A106944 * A106946 A106947 A106948

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved