23869210

Appears in sequences

• Upper triangular n X n (0,1)-matrices with no zero rows or columns.at n=7A005321
• Triangle T(n, k) read by rows: T(0, 0) = 1 and T(n, k) = Sum_{i=0..k-1} T(n, i) + Sum_{i=k..n-1} T(n-1, i).at n=28A318301
• Number A(n,k) of n X n Fishburn matrices with entries in the set {0,1,...,k}; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=43A369415