11991502235domain: NAppears in sequencesNumber of n X n 0..4 matrices with all row and column sums equal.at n=5A067212T(n,k) is the number of n X n 0..k arrays with row and column sums equal.at n=50A202784Number of 5 X 5 0..n arrays with row and column sums equal.at n=4A202787