OFFSET
1,1
COMMENTS
Discriminant = -240. See A107132 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
Except for 5, the primes are congruent to {17, 53} (mod 60). - T. D. Noe, May 02 2008
MATHEMATICA
QuadPrimes2[5, 0, 12, 10000] (* see A106856 *)
PROG
(Magma) [5] cat [p: p in PrimesUpTo(3000) | p mod 60 in [17, 53]]; // Vincenzo Librandi, Jul 25 2012
(PARI) list(lim)=my(v=List([5]), t); forprime(p=17, lim, t=p%60; if(t==17||t==53, listput(v, p))); Vec(v) \\ Charles R Greathouse IV, Feb 10 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
T. D. Noe, May 13 2005
STATUS
approved