202410

Appears in sequences

• Number of n X n matrices with nonnegative entries and every row and column sum 2.at n=6A000681
• Number of 6 X 6 stochastic matrices of integers: all rows and columns sum to n.at n=2A003439
• Number of n X n 0..2 arrays with row sums 10 and column sums 10.at n=5A172623
• Number of 3*n X 6 0..2 arrays with row sums 2 and column sums n.at n=1A172671
• Number of n X n 0..3 arrays with row sums 16 and column sums 16.at n=5A172728
• 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=42A257493
• Irregular triangle read by rows where T(n,k) is the number of d X d non-normal semi-magic squares with d = A027750(n,k) and sum of all entries equal to n.at n=33A321725