OFFSET
1,1
COMMENTS
Discriminant = -420. See A139827 for more information.
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)
FORMULA
The primes are congruent to {2, 53, 113, 137, 197, 233, 317} (mod 420).
MATHEMATICA
QuadPrimes2[2, -2, 53, 10000] (* see A106856 *)
PROG
(Magma) [ p: p in PrimesUpTo(5000) | p mod 420 in {2, 53, 113, 137, 197, 233, 317}]; // Vincenzo Librandi, Jul 29 2012
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
T. D. Noe, May 02 2008
STATUS
approved