login
Primes of the form 4x^2-3xy+4y^2, with x and y nonnegative.
1

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

%S 5,31,89,179,191,331,419,421,449,599,641,859,991,1021,1039,1109,1259,

%T 1291,1301,1489,1549,1621,1871,2011,2099,2311,2381,2539,2689,2909,

%U 3041,3169,3301,3331,3389,3391,3821,3919,3931,4019,4211,4229,4261

%N Primes of the form 4x^2-3xy+4y^2, with x and y nonnegative.

%C Discriminant=-55.

%H Vincenzo Librandi and Ray Chandler, <a href="/A106909/b106909.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[4, -3, 4, 10000] (* see A106856 *)

%K nonn,easy

%O 1,1

%A _T. D. Noe_, May 09 2005