a(n) = Sum_{k=1..n}(-1)^(k+1) * floor(n/(2*k-1))^n.
A350164
a(n) = Sum_{k=1..n}(-1)^(k+1) * floor(n/(2*k-1))^n.
Terms
- a(0) =1a(1) =4a(2) =26a(3) =255a(4) =3125a(5) =46593a(6) =823415a(7) =16776960a(8) =387400807a(9) =9999941975a(10) =285311495511
External references
- oeis: A350164