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%I #17 Sep 08 2022 08:45:33
%S 11,23,47,83,131,191,239,251,263,311,347,359,419,443,467,479,491,503,
%T 587,647,719,947,1031,1103,1151,1163,1187,1223,1259,1451,1487,1499,
%U 1559,1583,1607,1619,1787,1811,1847,1871,1907,2039,2063,2087,2099
%N Primes of the form 6x^2+6xy+11y^2.
%C Discriminant=-228. See A139827 for more information.
%H Vincenzo Librandi and Ray Chandler, <a href="/A139834/b139834.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)
%F The primes are congruent to {11, 23, 35, 47, 83, 119, 131, 191, 215} (mod 228).
%t QuadPrimes2[6, -6, 11, 10000] (* see A106856 *)
%o (Magma) [ p: p in PrimesUpTo(3000) | p mod 228 in {11, 23, 35, 47, 83, 119, 131, 191, 215}]; // _Vincenzo Librandi_, Jul 29 2012
%K nonn,easy
%O 1,1
%A _T. D. Noe_, May 02 2008