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Primes of the form 3x^2+2xy+5y^2, with x and y nonnegative.
2

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

%S 3,5,59,61,131,157,283,293,349,397,461,523,587,661,677,691,787,853,

%T 859,997,1013,1091,1109,1237,1277,1301,1427,1459,1571,1699,1811,1973,

%U 1979,2029,2141,2203,2243,2309,2467,2579,2659,2693,2749,2803,2861

%N Primes of the form 3x^2+2xy+5y^2, with x and y nonnegative.

%C Discriminant=-56.

%H Librandi and Ray Chandler, <a href="/A106914/b106914.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[3, 2, 5, 10000] (* see A106856 *)

%K nonn,easy

%O 1,1

%A _T. D. Noe_, May 09 2005