OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
MATHEMATICA
sp[n_]:=Module[{p=NextPrime[n]}, While[!Divisible[p+n, 13], p= NextPrime[ p]]; p]; NestList[sp, 2, 50] (* Harvey P. Dale, Sep 24 2016 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, May 28 2010
STATUS
approved