login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A106996
Primes of the form 3x^2+xy+8y^2, with x and y any integer.
1
3, 37, 53, 97, 127, 167, 193, 223, 257, 293, 373, 523, 547, 563, 677, 683, 743, 787, 797, 827, 857, 863, 877, 953, 1063, 1123, 1153, 1307, 1367, 1553, 1637, 1667, 1693, 1747, 1777, 1913, 2003, 2027, 2083, 2203, 2207, 2273, 2333, 2347, 2423, 2617
OFFSET
1,1
COMMENTS
Discriminant=-95.
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, 8, 10000], QuadPrimes2[3, -1, 8, 10000]] (* see A106856 *)
CROSSREFS
Sequence in context: A106103 A224471 A286637 * A338751 A300347 A047691
KEYWORD
nonn,easy
AUTHOR
T. D. Noe, May 09 2005
STATUS
approved