OFFSET
1,2
COMMENTS
n=4, f[4]=4^4=256, divisors={1,2,4} f[4/d]={256,4,1}, mu[d]={1,-1,0}, the sum is 256-4=252=a(4)
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..386
FORMULA
a(n) = Sum{f[n/d]*mu[d]}, where d|n and f[x]=A000312(x).
PROG
(PARI) a(n) = sumdiv(n, d, d^d*moebius(n/d)); \\ Michel Marcus, Nov 04 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Jul 19 2001
STATUS
approved