1809503019domain: NAppears in sequencesExpansion of 1/(1 - 3*x^2 - x^3).at n=35A052931Number of (s(0), s(1), ..., s(2n+1)) such that 0 < s(i) < 9 and |s(i) - s(i-1)| = 1 for i = 1,2,...,2n+1, s(0) = 1, s(2n+1) = 6.at n=16A094829