OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Prime[Range[1900]], MemberQ[{31}, Mod[#, 63]] &] (* Vincenzo Librandi, Sep 06 2012 *)
Select[Range[31, 13000, 63], PrimeQ] (* Harvey P. Dale, Jul 04 2019 *)
PROG
(Magma) [p: p in PrimesUpTo(13000) | p mod 63 eq 31 ] ; // Vincenzo Librandi, Sep 06 2012
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved