1130256

Appears in sequences

• Cyclops triangular numbers.at n=22A160717
• Number of n X 4 arrays with each row a permutation of 1..4 having at least as many downsteps as the preceding row.at n=4A221619
• 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=32A221623
• Number of 5Xn arrays with each row a permutation of 1..n having at least as many downsteps as the preceding row.at n=3A221627