OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..200
MATHEMATICA
NestList[NextPrime[10#, -1]&, 3, 20] (* Harvey P. Dale, Jun 10 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Artur Jasinski, Dec 16 2006
STATUS
approved