Number of permutations p of [n] such that the up-down signature of p has nonnegative partial sums with a maximal value of nine.
A320983
Number of permutations p of [n] such that the up-down signature of p has nonnegative partial sums with a maximal value of nine.
Terms
- a(0) =0a(1) =1a(2) =10a(3) =4116a(4) =45431a(5) =4619654a(6) =56724741a(7) =3604309466a(8) =49361628592
External references
- oeis: A320983