OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Prime[Range[600]], MemberQ[{0, 1, 2, 5}, Mod[#, 19]]&]
Select[Flatten[#+{0, 1, 2, 5}&/@(19*Range[0, 100])], PrimeQ] (* Harvey P. Dale, Mar 01 2019 *)
PROG
(Magma) [ p: p in PrimesUpTo(2000) | p mod 19 in {0, 1, 2, 5} ];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Aug 07 2012
STATUS
approved