OFFSET
1,1
COMMENTS
Subset of A046137.
Subsequence of A029710. - R. J. Mathar, May 06 2017
LINKS
Zak Seidov, Table of n, a(n) for n = 1..1000.
MATHEMATICA
Select[Partition[Prime[Range[2000]], 3, 1], Differences[#]=={4, 8}&][[All, 1]] (* Harvey P. Dale, Apr 02 2017 *)
PROG
(PARI) isok(p) = isprime(p) && (nextprime(p+1) == p+4) && (nextprime(p+5) == p+12); \\ Michel Marcus, Oct 13 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Apr 17 2008
STATUS
approved