98702domain: NAppears in sequencesNumber of permutations p of [n] such that the up-down signature of p has nonnegative partial sums with a maximal value <= 5.at n=9A262130G.f. A(x) satisfies: A(x) = 1 + x + x^2 + x^3*A(x)^2.at n=24A307970