A106983 Primes of the form x^2+xy+22y^2, with x and y nonnegative.

103, 151, 283, 373, 397, 487, 571, 709, 877, 883, 1039, 1459, 1531, 1567, 1753, 2017, 2029, 2203, 2239, 2371, 2383, 2557, 2617, 2659, 2719, 2749, 2791, 2851, 3181, 3253, 3301, 3331, 3373, 3793, 3919, 3931, 4093, 4111, 4201, 4327, 4357

Offset: 1

Author

T. D. Noe, May 09 2005

Keywords

• nonn
• easy

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)

Programs

Mathematica

QuadPrimes2[1, 1, 22, 10000] (* see A106856 *)