A106991 Primes of the form 5x^2-5xy+6y^2, with x and y nonnegative.

5, 19, 191, 199, 251, 349, 491, 709, 739, 809, 929, 1151, 1201, 1289, 1429, 1451, 1559, 1619, 1621, 2039, 2129, 2281, 2341, 2551, 2591, 2741, 2819, 2861, 3019, 3329, 3391, 3539, 3581, 3769, 3919, 3931, 4091, 4129, 4519, 4831, 4861, 4889

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[5, -5, 6, 10000] (* see A106856 *)

Crossrefs

Sequence in context: A145935 A024529 A363000 * A377556 A102262 A123281

Adjacent sequences: A106988 A106989 A106990 * A106992 A106993 A106994

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved