OFFSET
1,2
COMMENTS
Since all primes except the first are odd, this is A007510(n)+1 if n>1.
EXAMPLE
a(1)=2-(-1)^2=1, a(2)=23-(-1)^23=24.
CROSSREFS
KEYWORD
nonn,less
AUTHOR
Juri-Stepan Gerasimov, Aug 15 2009
EXTENSIONS
Edited and entries checked by R. J. Mathar, Aug 21 2009
STATUS
approved