OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Prime[Range[1300]], MemberQ[{15}, Mod[#, 56]] &] (* Vincenzo Librandi, Sep 01 2012 *)
Select[Range[15, 9000, 56], PrimeQ] (* Harvey P. Dale, Sep 25 2015 *)
PROG
(Magma) [p: p in PrimesUpTo(10000) | p mod 56 eq 15 ]; // Vincenzo Librandi, Sep 01 2012
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved