Number of permutations of {1..n} whose differences of all degrees are nonzero.
A325850
Number of permutations of {1..n} whose differences of all degrees are nonzero.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =18a(5) =72a(6) =446a(7) =2804a(8) =21560a(9) =184364a(10) =1788514
External references
- oeis: A325850