A106913 - OEIS

A106913

Primes of the form x^2+xy+14y^2, with x and y nonnegative.

59, 71, 199, 229, 251, 269, 311, 379, 389, 509, 631, 661, 691, 751, 839, 929, 1049, 1061, 1171, 1181, 1279, 1321, 1409, 1439, 1499, 1571, 1609, 1699, 1721, 1741, 1901, 1951, 2029, 2069, 2269, 2341, 2399, 2531, 2621, 2671, 2729, 2819, 2971

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

OFFSET

1,1

COMMENTS

Discriminant=-55.

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[1, 1, 14, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A126693 A139938 A033235 * A212266 A322919 A026050

Adjacent sequences: A106910 A106911 A106912 * A106914 A106915 A106916

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved