A106964 - OEIS

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

%S 3,7,23,67,127,163,227,263,307,383,463,467,523,563,587,647,727,787,

%T 907,983,1087,1103,1123,1163,1187,1283,1327,1367,1447,1483,1543,1567,

%U 1583,1783,1823,1847,1867,1907,2003,2027,2087,2143,2207,2243,2467

%N Primes of the form 3x^2+2xy+7y^2, with x and y nonnegative.

%C Discriminant=-80.

%H Vincenzo Librandi and Ray Chandler, <a href="/A106964/b106964.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, 7, 10000] (* see A106856 *)

%K nonn,easy

%O 1,1

%A _T. D. Noe_, May 09 2005