a(n) = Sum_{d|n} mu(n/d) * d^n / phi(n).
A344210
a(n) = Sum_{d|n} mu(n/d) * d^n / phi(n).
Terms
- a(0) =1a(1) =3a(2) =13a(3) =120a(4) =781a(5) =22932a(6) =137257a(7) =4177920a(8) =64566801a(9) =2497558338a(10) =28531167061
External references
- oeis: A344210