132724

Appears in sequences

• Number of 4 X 4 matrices with nonnegative integer entries and row and column sums equal to n.at n=6A001496
• Number of n X n 0..6 arrays with row sums 6 and column sums 6.at n=4A172894
• Number A(n,k) of n X n nonnegative integer matrices with all row and column sums equal to k; square array A(n,k), n >= 0, k >= 0, read by antidiagonals.at n=59A257493