143065domain: NAppears in sequencesNumber of 0..n arrays x(0..4) of 5 elements without any two consecutive increases or two consecutive decreases.at n=11A200840G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n / A(x)^(n+1) * Product_{k=1..n} (1 + k*x).at n=16A324615