A106960 Primes of the form 2x^2+xy+10y^2, with x and y any integer.

2, 11, 13, 31, 89, 101, 163, 167, 181, 241, 257, 263, 283, 313, 367, 383, 389, 457, 467, 487, 499, 523, 547, 571, 617, 653, 719, 743, 751, 809, 821, 877, 919, 953, 971, 1031, 1091, 1151, 1187, 1193, 1201, 1217, 1223, 1231, 1237, 1361, 1423, 1471

Offset

1,1

Comments

Discriminant=-79.

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

Union[QuadPrimes2[2, 1, 10, 10000], QuadPrimes2[2, -1, 10, 10000]] (* see A106856 *)

Crossrefs

Sequence in context: A019407 A075781 A023288 * A084405 A041447 A291464

Adjacent sequences: A106957 A106958 A106959 * A106961 A106962 A106963

Keyword

nonn,easy

Author

T. D. Noe, May 09 2005

Status

approved