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A107005
Primes of the form 4x^2+4xy+7y^2, with x and y nonnegative.
2
7, 31, 79, 103, 127, 199, 223, 271, 367, 439, 463, 607, 631, 823, 919, 967, 991, 1087, 1231, 1279, 1303, 1327, 1423, 1447, 1543, 1567, 1663, 1831, 1879, 1951, 1999, 2143, 2239, 2311, 2383, 2503, 2551, 2719, 2791, 2887, 3079, 3271, 3319, 3391
OFFSET
1,1
COMMENTS
Discriminant=-96.
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, 4, 7, 10000] (* see A106856 *)
CROSSREFS
Sequence in context: A304163 A003550 A107006 * A201477 A164621 A202254
KEYWORD
nonn,easy
AUTHOR
T. D. Noe, May 09 2005
STATUS
approved