126289

Appears in sequences

• Three-dimensional small Schroeder numbers.at n=5A105124
• Array read by antidiagonals: T(n,k) is the number of n X k matrices whose values cover an initial interval of positive integers and whose rows and columns have values which are strictly increasing.at n=39A374985
• Array read by antidiagonals: T(n,k) is the number of n X k matrices whose values cover an initial interval of positive integers and whose rows and columns have values which are strictly increasing.at n=41A374985