148700748

Appears in sequences

• Number of nX6 arrays with each row a permutation of 1..6 having at least as many downsteps as the preceding row.at n=2A221621
• T(n,k)=Number of nXk arrays with each row a permutation of 1..k having at least as many downsteps as the preceding row.at n=30A221623
• Number of 3Xn arrays with each row a permutation of 1..n having at least as many downsteps as the preceding row.at n=5A221625