OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Range[13, 30000, 90], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Jul 14 2011 *)
Select[Prime[Range[3000]], MemberQ[{13}, Mod[#, 45]]&] (* Vincenzo Librandi, Aug 26 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(10000) | p mod 45 eq 13]; // Vincenzo Librandi, Aug 26 2012
(PARI) select(n->n%45==13, primes(1000)) \\ Charles R Greathouse IV, Feb 06 2013
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved