OFFSET
1,2
EXAMPLE
a(12) = 156; a(12) = Sum_{p|12, p prime} 12^gcd(p,12/p) = 12^gcd(2,12/2) + 12^gcd(3,12/3) = 12^2 + 12^1 = 156.
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, Feb 17 2022
STATUS
approved