A106907 Primes of the form 4x^2+3xy+4y^2, with x and y nonnegative.

11, 181, 401, 521, 619, 709, 719, 829, 911, 971, 1511, 1709, 1831, 1879, 2039, 2161, 2179, 2281, 2579, 2861, 3001, 3061, 3221, 3259, 3359, 3499, 4051, 4159, 4409, 4691, 4871, 4931, 4951, 5009, 5171, 5351, 5449, 5569, 5591, 5839, 6131, 6449

Offset

1,1

Comments

Discriminant=-55.

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, 3, 4, 10000] (* see A106856 *)

Crossrefs

Sequence in context: A157382 A174979 A157945 * A020456 A036935 A205088

Adjacent sequences: A106904 A106905 A106906 * A106908 A106909 A106910

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved