OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Prime[Range[1000]], MemberQ[{2, 7}, Mod[#, 19]] &] (* Librandi *)
Select[Flatten[Table[19n + {2, 7}, {n, 0, 199}]], PrimeQ] (* Alonso del Arte, Jan 21 2014 *)
PROG
(Magma) [ p: p in PrimesUpTo(3000) | p mod 19 in {2, 7} ];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Aug 07 2012
STATUS
approved