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Primes of the form 5x^2-xy+5y^2, with x and y nonnegative.
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%I #17 Aug 05 2014 14:16:30

%S 5,23,47,59,113,179,251,269,317,383,401,449,509,587,599,617,641,653,

%T 719,773,839,881,911,947,971,983,1061,1193,1259,1277,1307,1409,1433,

%U 1439,1523,1571,1607,1697,1709,1787,1871,1973,2027,2039,2069,2297

%N Primes of the form 5x^2-xy+5y^2, with x and y nonnegative.

%C Discriminant=-99.

%H Vincenzo Librandi and Ray Chandler, <a href="/A107011/b107011.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[5, -1, 5, 10000] (* see A106856 *)

%K nonn,easy

%O 1,1

%A _T. D. Noe_, May 09 2005