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Primes of the form 3x^2-3xy+8y^2, with x and y nonnegative.
1

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

%S 3,29,41,137,191,263,359,461,467,479,491,617,773,797,827,971,983,1229,

%T 1433,1439,1481,1493,1613,1697,1721,1787,1931,2003,2099,2339,2381,

%U 2393,2531,2621,2729,2753,2903,2927,2939,2999,3347,3407,3449,3557

%N Primes of the form 3x^2-3xy+8y^2, with x and y nonnegative.

%C Discriminant=-87.

%H Vincenzo Librandi and Ray Chandler, <a href="/A106979/b106979.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, -3, 8, 10000] (* see A106856 *)

%K nonn,easy

%O 1,1

%A _T. D. Noe_, May 09 2005