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A106965 Primes of the form 3x^2-2xy+7y^2, with x and y nonnegative. 2
3, 7, 43, 47, 83, 103, 107, 167, 223, 283, 347, 367, 443, 487, 503, 547, 607, 643, 683, 743, 823, 827, 863, 883, 887, 947, 967, 1063, 1223, 1303, 1307, 1423, 1427, 1487, 1523, 1607, 1627, 1663, 1667, 1723, 1747, 1787, 1987, 2063, 2083, 2203, 2267 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Discriminant=-80.
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
QuadPrimes2[3, -2, 7, 10000] (* see A106856 *)
CROSSREFS
Sequence in context: A018993 A217759 A160615 * A337829 A257366 A141304
KEYWORD
nonn,easy
AUTHOR
T. D. Noe, May 09 2005
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)