31585056domain: NAppears in sequencesNumber of nX6 0..3 arrays with rows unimodal and columns nondecreasing.at n=3A223985T(n,k)=Number of nXk 0..3 arrays with rows unimodal and columns nondecreasing.at n=39A223987Number of 4Xn 0..3 arrays with rows unimodal and columns nondecreasing.at n=5A223989