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A106990 Primes of the form 5x^2+5xy+6y^2, with x and y nonnegative. 2


%S 5,199,251,491,709,739,929,1151,1201,1289,1429,1451,1621,2039,2129,

%T 2281,2341,2551,2591,2819,3019,3329,3539,3581,3919,4091,4519,4831,

%U 4861,4889,4919,5179,5381,5431,5521,5749,5861,6091,6659,6661,7069

%N Primes of the form 5x^2+5xy+6y^2, with x and y nonnegative.

%C Discriminant=-95.

%H Vincenzo Librandi and Ray Chandler, <a href="/A106990/b106990.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[5, 5, 6, 10000] (* see A106856 *)

%K nonn,easy

%O 1,1

%A _T. D. Noe_, May 09 2005

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Last modified October 17 00:35 EDT 2021. Contains 348048 sequences. (Running on oeis4.)