30756756domain: NAppears in sequencesNumber of n X 3 0..3 arrays with rows nondecreasing and antidiagonals unimodal.at n=5A224019T(n,k)=Number of nXk 0..3 arrays with rows nondecreasing and antidiagonals unimodal.at n=33A224024Number of 6Xn 0..3 arrays with rows nondecreasing and antidiagonals unimodal.at n=2A224028