Number of lattice paths from {n}^9 to {0}^9 using steps that decrement one component by 1 such that for each point (p_1,p_2,...,p_9) we have abs(p_{i}-p_{i+1}) <= 1.

A227671

Number of lattice paths from {n}^9 to {0}^9 using steps that decrement one component by 1 such that for each point (p_1,p_2,...,p_9) we have abs(p_{i}-p_{i+1}) <= 1.