OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Prime[Range[2000]], MemberQ[{1, 4}, Mod[#, 13]]&]
PROG
(Magma) [ p: p in PrimesUpTo(2000) | p mod 13 in {1, 4} ];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Aug 06 2012
STATUS
approved