1070499domain: NAppears in sequencesNumber of nX3 0..3 arrays with row sums nondecreasing and column sums unimodal.at n=3A224121T(n,k) is the number of n X k 0..3 arrays with row sums nondecreasing and column sums unimodal.at n=18A224123Number of 4Xn 0..3 arrays with row sums nondecreasing and column sums unimodal.at n=2A224126