Number of permutations p of [n] such that the up-down signature of 0,p has nonnegative partial sums with a maximal value of seven.
A316394
Number of permutations p of [n] such that the up-down signature of 0,p has nonnegative partial sums with a maximal value of seven.
Terms
- a(0) =1a(1) =7a(2) =522a(3) =4260a(4) =163871a(5) =1572713a(6) =49601660a(7) =554432537a(8) =16431601190a(9) =211104220038
External references
- oeis: A316394