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A106953 Primes of the form 4x^2+2xy+5y^2, with x and y nonnegative. 2

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

%S 5,11,47,73,139,191,229,263,277,283,347,349,457,461,541,613,631,719,

%T 727,757,821,881,883,1013,1049,1061,1087,1103,1201,1223,1303,1451,

%U 1483,1487,1493,1531,1567,1583,1601,1621,1697,1733,1759,1811,1847

%N Primes of the form 4x^2+2xy+5y^2, with x and y nonnegative.

%C Discriminant=-76.

%H Vincenzo Librandi and Ray Chandler, <a href="/A106953/b106953.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, 2, 5, 10000] (* see A106856 *)

%K nonn,easy

%O 1,1

%A _T. D. Noe_, May 09 2005

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Last modified August 30 07:09 EDT 2024. Contains 375532 sequences. (Running on oeis4.)