235092820domain: NAppears in sequencesNumber of nX4 0..3 arrays with row sums equal and column sums equal.at n=6A202682Number of nX7 0..3 arrays with row sums equal and column sums equal.at n=3A202685T(n,k)=Number of nXk 0..3 arrays with row sums equal and column sums equal.at n=48A202686