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A106965 Primes of the form 3x^2-2xy+7y^2, with x and y nonnegative. 2
3, 7, 43, 47, 83, 103, 107, 167, 223, 283, 347, 367, 443, 487, 503, 547, 607, 643, 683, 743, 823, 827, 863, 883, 887, 947, 967, 1063, 1223, 1303, 1307, 1423, 1427, 1487, 1523, 1607, 1627, 1663, 1667, 1723, 1747, 1787, 1987, 2063, 2083, 2203, 2267 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-80.

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, 7, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A018993 A217759 A160615 * A337829 A257366 A141304

Adjacent sequences:  A106962 A106963 A106964 * A106966 A106967 A106968

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved

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Last modified October 17 13:31 EDT 2021. Contains 348049 sequences. (Running on oeis4.)