3770722domain: NAppears in sequencesNumber of nX5 0..3 arrays with rows unimodal and columns nondecreasing.at n=3A223984T(n,k)=Number of nXk 0..3 arrays with rows unimodal and columns nondecreasing.at n=31A223987Number of 4Xn 0..3 arrays with rows unimodal and columns nondecreasing.at n=4A223989