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A106956 Primes of the form 4x^2+xy+5y^2, with x and y nonnegative. 2
5, 23, 67, 73, 151, 269, 337, 421, 431, 439, 557, 593, 643, 733, 761, 887, 1117, 1171, 1229, 1249, 1319, 1381, 1511, 1543, 1667, 1811, 2063, 2099, 2213, 2333, 2389, 2467, 2539, 2549, 2609, 2707, 2741, 2801, 2927, 3067, 3169, 3191, 3343, 3391 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-79.

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, 5, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A176874 A331987 A241765 * A084671 A284648 A290187

Adjacent sequences:  A106953 A106954 A106955 * A106957 A106958 A106959

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved

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Last modified November 30 11:07 EST 2021. Contains 349419 sequences. (Running on oeis4.)