OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Prime[Range[1000]], MemberQ[{2, 5, 7}, Mod[#, 13]]&]
Select[Flatten[Table[13n+{2, 5, 7}, {n, 0, 100}]], PrimeQ] (* Harvey P. Dale, May 10 2021 *)
PROG
(Magma) [ p: p in PrimesUpTo(2000) | p mod 13 in {2, 5, 7} ];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Aug 07 2012
STATUS
approved