A106964 - OEIS

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A106964

Primes of the form 3x^2+2xy+7y^2, with x and y nonnegative.

3, 7, 23, 67, 127, 163, 227, 263, 307, 383, 463, 467, 523, 563, 587, 647, 727, 787, 907, 983, 1087, 1103, 1123, 1163, 1187, 1283, 1327, 1367, 1447, 1483, 1543, 1567, 1583, 1783, 1823, 1847, 1867, 1907, 2003, 2027, 2087, 2143, 2207, 2243, 2467

(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: A148691 A148692 A201204 * A096019 A148693 A148694

Adjacent sequences: A106961 A106962 A106963 * A106965 A106966 A106967

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved