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A106954 Primes of the form 4x^2+2xy+5y^2, with x and y any integer. 2


%S 5,7,11,17,43,47,61,73,131,137,139,149,191,199,229,233,239,251,263,

%T 277,283,311,347,349,359,389,397,443,457,461,463,467,499,541,557,577,

%U 587,613,617,631,643,647,653,691,719,727,739,757,761,769,809,821,823

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

%C Discriminant=-76.

%C Primes p such that the polynomial x^3-2x-2 is irreducible over Zp. The polynomial discriminant is also -76. - _T. D. Noe_, May 13 2005

%H Vincenzo Librandi and Ray Chandler, <a href="/A106954/b106954.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, 2, 5, 10000], 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 November 30 09:54 EST 2021. Contains 349419 sequences. (Running on oeis4.)