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A106967 Primes of the form 3x^2+xy+7y^2, with x and y any integer. 2
3, 7, 11, 17, 29, 31, 37, 59, 61, 109, 113, 127, 151, 167, 173, 191, 197, 241, 313, 317, 349, 353, 359, 373, 383, 409, 419, 431, 443, 463, 479, 499, 509, 523, 547, 563, 593, 617, 619, 673, 691, 727, 733, 757, 839, 853, 857, 859, 863, 881, 907, 911, 929, 941 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-83.

Primes p such that the polynomial x^3-2x^2-2x-1 is irreducible over Zp. The polynomial discriminant is also -83. - T. D. Noe, May 13 2005

LINKS

Vincenzo Librandi and Ray Chandler, Table of n, a(n) for n = 1..10000 [First 1000 terms from Vincenzo Librandi]

N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)

MATHEMATICA

Union[QuadPrimes2[3, 1, 7, 10000], QuadPrimes2[3, -1, 7, 10000]] (* see A106856 *)

CROSSREFS

Sequence in context: A088206 A052341 A038949 * A045420 A190898 A142248

Adjacent sequences:  A106964 A106965 A106966 * A106968 A106969 A106970

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved

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Last modified December 3 12:46 EST 2016. Contains 278734 sequences.