OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
C. K. Caldwell, The Prime Pages.
MATHEMATICA
Select[Range[29, 4500, 30], PrimeQ[#]&&NoneTrue[#+{2, -2}, PrimeQ]&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Dec 13 2018 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Omar E. Pol, Aug 20 2007
STATUS
approved