OFFSET
1,1
LINKS
Zak Seidov, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Prime[Range[200]], ! PrimeQ[# + 6] && ! PrimeQ[# + 12] &] (* T. D. Noe, Dec 10 2013 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Dec 07 2013
STATUS
approved