a(n) = Sum_{d|n} d^n * phi(d), where phi(n) is the Euler totient function A000010(n).
A226561
a(n) = Sum_{d|n} d^n * phi(d), where phi(n) is the Euler totient function A000010(n).
Terms
- a(0) =1a(1) =5a(2) =55a(3) =529a(4) =12501a(5) =94835a(6) =4941259a(7) =67240193a(8) =2324562301a(9) =40039063525
External references
- oeis: A226561