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A106957 Primes of the form 4x^2+xy+5y^2, with x and y any integer. 1
5, 19, 23, 67, 73, 97, 131, 151, 239, 269, 277, 281, 337, 347, 421, 431, 433, 439, 557, 569, 593, 599, 641, 643, 683, 733, 761, 773, 787, 839, 857, 887, 911, 997, 1013, 1021, 1049, 1063, 1069, 1117, 1129, 1171, 1229, 1249, 1283, 1319, 1381, 1427 (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

Union[QuadPrimes2[4, 1, 5, 10000], QuadPrimes2[4, -1, 5, 10000]] (* see A106856 *)

CROSSREFS

Sequence in context: A146509 A062340 A167766 * A236167 A022143 A004623

Adjacent sequences:  A106954 A106955 A106956 * A106958 A106959 A106960

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved

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Last modified December 3 12:16 EST 2021. Contains 349462 sequences. (Running on oeis4.)