4140000domain: NAppears in sequencesNumber of nX3 arrays containing 3 copies of 0..n-1 with column sums equal.at n=4A268471T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with column sums equal.at n=25A268472Number of 5Xn arrays containing n copies of 0..5-1 with column sums equal.at n=2A268474