A106925 Primes of the form 4x^2-xy+4y^2, with x and y nonnegative.

7, 37, 193, 211, 379, 457, 487, 673, 709, 883, 991, 1171, 1327, 1381, 1423, 1429, 1453, 1597, 1747, 1759, 1801, 1873, 2017, 2083, 2347, 2521, 2671, 2851, 3313, 3319, 3469, 3529, 3613, 3739, 3823, 3847, 3889, 4027, 4327, 4519, 4603, 4813

Offset

1,1

Comments

Discriminant=-63.

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, -1, 4, 10000] (* see A106856 *)

Crossrefs

Sequence in context: A226867 A140476 A057651 * A085640 A196805 A069378

Adjacent sequences: A106922 A106923 A106924 * A106926 A106927 A106928

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved