a(n) = Sum_{d|n} mu(n/d) * (-n)^(d-1).
A383012
a(n) = Sum_{d|n} mu(n/d) * (-n)^(d-1).
Terms
- a(0) =1a(1) =-3a(2) =8a(3) =-60a(4) =624a(5) =-7805a(6) =117648a(7) =-2096640a(8) =43046640a(9) =-1000009989a(10) =25937424600a(11) =-743008120140
External references
- oeis: A383012