A106982 Primes of the form 2x^2-xy+11y^2, with x and y nonnegative.

2, 11, 17, 101, 131, 269, 317, 389, 449, 503, 563, 569, 641, 743, 839, 881, 887, 947, 1061, 1259, 1307, 1319, 1373, 1487, 1511, 1523, 1583, 1667, 1709, 2027, 2069, 2129, 2207, 2273, 2309, 2399, 2417, 2447, 2591, 2657, 2687, 2699, 2801, 2861

Offset

1,1

Comments

Discriminant=-87.

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[2, -1, 11, 10000] (* see A106856 *)

Crossrefs

Sequence in context: A106981 A176985 A089592 * A347600 A043461 A030551

Adjacent sequences: A106979 A106980 A106981 * A106983 A106984 A106985

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved