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Primes of the form x^2-xy+15y^2, with x and y nonnegative.
2

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

%S 17,59,71,139,163,197,223,317,373,383,389,439,461,479,521,547,631,641,

%T 677,727,733,743,787,827,953,1019,1063,1103,1181,1201,1229,1237,1327,

%U 1361,1373,1511,1559,1619,1657,1693,1747,1787,1823,1907,1913,1951

%N Primes of the form x^2-xy+15y^2, with x and y nonnegative.

%C Discriminant=-59.

%H Vincenzo Librandi and Ray Chandler, <a href="/A106922/b106922.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[1, -1, 15, 10000] (* see A106856 *)

%K nonn,easy

%O 1,1

%A _T. D. Noe_, May 09 2005