72105068domain: NAppears in sequencesNumber of nX3 0..3 arrays with rows unimodal and antidiagonals nondecreasing.at n=5A224199T(n,k)=Number of nXk 0..3 arrays with rows unimodal and antidiagonals nondecreasing.at n=33A224204Number of 6 X n 0..3 arrays with rows unimodal and antidiagonals nondecreasing.at n=2A224208