263516domain: NAppears in sequencesNumber of nX3 0..3 arrays with rows unimodal and antidiagonals nondecreasing.at n=3A224199T(n,k)=Number of nXk 0..3 arrays with rows unimodal and antidiagonals nondecreasing.at n=18A224204Number of 4Xn 0..3 arrays with rows unimodal and antidiagonals nondecreasing.at n=2A224206