Number of permutations p of [n] such that the up-down signature of p has nonnegative partial sums with a maximal value of six.
A320980
Number of permutations p of [n] such that the up-down signature of p has nonnegative partial sums with a maximal value of six.
Terms
- a(0) =0a(1) =1a(2) =7a(3) =514a(4) =4189a(5) =154261a(6) =1477381a(7) =44169020a(8) =493190771a(9) =13821362271a(10) =177705152975
External references
- oeis: A320980