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Primes of the form 4x^2+xy+4y^2, with x and y nonnegative.
2

%I #17 Aug 05 2014 14:16:29

%S 43,109,151,331,337,499,751,757,907,919,1117,1201,1303,1471,1549,1789,

%T 2053,2137,2143,2221,2311,2473,2647,2713,3049,3259,3301,3361,3607,

%U 3697,3943,4099,4363,4447,4621,4783,4789,5209,5527,5623,5653,5737

%N Primes of the form 4x^2+xy+4y^2, with x and y nonnegative.

%C Discriminant=-63.

%H Vincenzo Librandi and Ray Chandler, <a href="/A106923/b106923.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi]

%H N. J. A. Sloane et al., <a href="https://oeis.org/wiki/Binary_Quadratic_Forms_and_OEIS">Binary Quadratic Forms and OEIS</a> (Index to related sequences, programs, references)

%t QuadPrimes2[4, 1, 4, 10000] (* see A106856 *)

%K nonn,easy

%O 1,1

%A _T. D. Noe_, May 09 2005