OFFSET
1,1
COMMENTS
The old definition was "Start with the list of primes; accept 2 but remove the list of primes S(2); accept the next prime (3) but remove the list of primes S(3); repeat".
If p is a prime, S(p) denotes the list of primes {11*p+2, 11(11*p+2)+2, 11(11(11*p+2)+2)+2, ...}, stopping as soon as we reach the first composite number.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..9800
MATHEMATICA
Select[Prime[Range[60]], !PrimeQ[(# - 2)/11] &] (* Vincenzo Librandi, Feb 24 2013 *)
PROG
(Magma) [p: p in PrimesUpTo(300)| not IsPrime((p-2)/11)]; // Vincenzo Librandi, Feb 24 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Apr 10 2010
EXTENSIONS
New definition from Jon E. Schoenfield, Jun 18 2010
STATUS
approved