OFFSET
1,2
COMMENTS
When p is prime, A162657(p)=p so a(p)=p+1.
LINKS
Michel Marcus, Table of n, a(n) for n = 1..1000
EXAMPLE
A162657(2) = 2, so a(2)=numerator(sigma(2)/2)=numerator(3/2)=3.
CROSSREFS
KEYWORD
nonn
AUTHOR
Michel Marcus, Aug 14 2012
STATUS
approved