a(n) = Sum_{k=1..n} k^(gcd(k,n) - 1).
A342394
a(n) = Sum_{k=1..n} k^(gcd(k,n) - 1).
Terms
- a(0) =1a(1) =3a(2) =11a(3) =68a(4) =629a(5) =7793a(6) =117655a(7) =2097228a(8) =43046772a(9) =1000000649a(10) =25937424611a(11) =743008379146
External references
- oeis: A342394