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A106993 Primes of the form 4x^2+xy+6y^2, with x and y any integer. 1

%I #20 Aug 05 2014 14:16:30

%S 11,61,101,139,149,229,271,311,359,479,499,541,571,619,631,691,701,

%T 719,761,769,881,1031,1049,1061,1069,1259,1279,1301,1489,1499,1669,

%U 1721,1759,1811,1831,1871,1949,1999,2069,2099,2221,2239,2251,2381

%N Primes of the form 4x^2+xy+6y^2, with x and y any integer.

%C Discriminant=-95.

%H Vincenzo Librandi and Ray Chandler, <a href="/A106993/b106993.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 Union[QuadPrimes2[4, 1, 6, 10000], QuadPrimes2[4, -1, 6, 10000]] (* see A106856 *)

%K nonn,easy

%O 1,1

%A _T. D. Noe_, May 09 2005

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)