OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Range[28, 21000, 61], PrimeQ] (* Harvey P. Dale, Mar 16 2012 *)
Select[Prime[Range[2600]], MemberQ[{28}, Mod[#, 61]] &] (* Vincenzo Librandi, Sep 05 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(21000) | p mod 61 eq 28 ] ; // Vincenzo Librandi, Sep 05 2012
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved