OFFSET
1,1
COMMENTS
Trivially every odd prime is expressed in form n<+>1 (cf. A208982).
FORMULA
For n>=2, a(n) = A007519(n-1). - Vladimir Shevelev, Apr 18 2012
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Vladimir Shevelev and Peter J. C. Moses, Mar 10 2012
STATUS
approved