A106966 Primes of the form 3x^2+xy+7y^2, with x and y nonnegative.

3, 7, 11, 37, 59, 61, 113, 151, 197, 313, 317, 353, 419, 463, 499, 563, 593, 733, 757, 859, 881, 907, 929, 941, 977, 997, 1021, 1033, 1109, 1123, 1223, 1237, 1249, 1283, 1451, 1481, 1543, 1559, 1613, 1741, 1759, 1811, 1867, 1877, 1889, 1901, 1907

Offset

1,1

Comments

Discriminant=-83.

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[3, 1, 7, 10000] (* see A106856 *)

Crossrefs

Sequence in context: A038913 A141178 A362005 * A191027 A139599 A141161

Adjacent sequences: A106963 A106964 A106965 * A106967 A106968 A106969

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved