A033251 Primes of form x^2+79*y^2.

79, 83, 179, 223, 317, 397, 479, 541, 563, 677, 727, 757, 811, 863, 907, 941, 967, 1103, 1277, 1289, 1433, 1489, 1523, 1553, 1867, 1889, 1979, 1993, 1997, 2011, 2039, 2311, 2341, 2383, 2459, 2551, 2579

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Comments

Also primes of the form x^2-xy+20y^2 with x and y nonnegative. - T. D. Noe, May 08 2005

References

• David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989.

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, 0, 79, 10000] (* see A106856 *)