A106994 - OEIS

A106994

Primes of the form 4x^2-xy+6y^2, with x and y nonnegative.

101, 139, 149, 229, 311, 359, 479, 541, 619, 691, 701, 719, 761, 1049, 1259, 1489, 1499, 1669, 1721, 1759, 1811, 1831, 1949, 2099, 2251, 2441, 2999, 3049, 3121, 3209, 3331, 3691, 4001, 4051, 4229, 4339, 4481, 4561, 4621, 4729, 4871, 5021

(list; graph; refs; listen; history; text; internal format)

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[4, -1, 6, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A035790 A139489 A358737 * A050672 A122531 A141871

Adjacent sequences: A106991 A106992 A106993 * A106995 A106996 A106997

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved