OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..100
MATHEMATICA
Select[Prime[Range[4, 25000]], Divisible[#-5, EulerPhi[#-5]]&] (* Harvey P. Dale, Jul 18 2012 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Benoit Cloitre, Feb 22 2002
STATUS
approved