a(n) = Sum_{k=1..n} (-1)^(k+1) * floor(n/k)^n.
A344724
a(n) = Sum_{k=1..n} (-1)^(k+1) * floor(n/k)^n.
Terms
- a(0) =1a(1) =3a(2) =27a(3) =240a(4) =3094a(5) =45990a(6) =821484a(7) =16711680a(8) =387177517a(9) =9990293423a(10) =285263019633
External references
- oeis: A344724