A106916 Primes of the form 3x^2-2xy+5y^2, with x and y nonnegative.

3, 5, 13, 19, 83, 101, 139, 173, 181, 227, 229, 251, 269, 307, 419, 467, 509, 563, 619, 643, 733, 773, 797, 811, 829, 941, 971, 1021, 1069, 1123, 1181, 1259, 1291, 1307, 1483, 1531, 1613, 1627, 1637, 1669, 1693, 1741, 1861, 1867, 1907, 1931, 1949

Offset

1,1

Comments

Discriminant=-56.

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, -2, 5, 10000] (* see A106856 *)

Crossrefs

Sequence in context: A240278 A106915 A112928 * A249340 A034484 A290441

Adjacent sequences: A106913 A106914 A106915 * A106917 A106918 A106919

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved