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A139927
Primes of the form 19x^2+14xy+19y^2.
2
19, 67, 163, 307, 331, 379, 499, 619, 643, 691, 739, 787, 811, 1051, 1123, 1579, 1627, 1723, 1747, 1867, 1987, 2179, 2203, 2251, 2347, 2371, 2659, 2683, 2803, 2971, 3187, 3307, 3499, 3547, 3739, 3907, 3931, 4051, 4219, 4243, 4363, 4483
OFFSET
1,1
COMMENTS
Discriminant=-1248. See A139827 for more information.
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)
FORMULA
The primes are congruent to {19, 67, 115, 163, 187, 307} (mod 312).
MATHEMATICA
Union[QuadPrimes2[19, 14, 19, 10000], QuadPrimes2[19, -14, 19, 10000]] (* see A106856 *)
PROG
(Magma) [ p: p in PrimesUpTo(6000) | p mod 312 in [19, 67, 115, 163, 187, 307]]; // Vincenzo Librandi, Aug 02 2012
CROSSREFS
Sequence in context: A165806 A357676 A142404 * A337197 A357365 A228670
KEYWORD
nonn,easy
AUTHOR
T. D. Noe, May 02 2008
STATUS
approved