Number of permutations p of [n] such that the up-down signature of 0,p has nonnegative partial sums with a maximal value <= 8.
A262170
Number of permutations p of [n] such that the up-down signature of 0,p has nonnegative partial sums with a maximal value <= 8.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =20a(5) =87a(6) =522a(7) =3271a(8) =26168a(9) =214954a(10) =2149540a(11) =21879021a(12) =262548252a(13) =3189754241a(14) =44656559374a(15) =630564958413
External references
- oeis: A262170