OFFSET
1,1
COMMENTS
Notice that a(n)-n is always prime by definition, e.g.,
a(1) - 1 = 7, a(2) - 2 = 23, a(3) - 3 = 107, etc.
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Apr 07 2008
STATUS
approved