A106896 Primes of the form 3x^2-xy+4y^2, with x and y nonnegative.

3, 17, 37, 79, 149, 241, 251, 271, 347, 383, 397, 653, 659, 661, 769, 773, 811, 863, 1019, 1061, 1097, 1109, 1123, 1187, 1249, 1297, 1303, 1459, 1559, 1567, 1583, 1601, 1607, 1619, 1663, 1847, 1901, 1931, 2011, 2143, 2243, 2281, 2309, 2503

Offset

1,1

Comments

Discriminant=-47.

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[3, -1, 4, 10000] (* see A106856 *)

Crossrefs

Sequence in context: A031386 A146813 A106895 * A097938 A354475 A073162

Adjacent sequences: A106893 A106894 A106895 * A106897 A106898 A106899

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved