1859020domain: NAppears in sequencesNumber of n X 3 0..3 arrays with rows nondecreasing and antidiagonals unimodal.at n=4A224019T(n,k)=Number of nXk 0..3 arrays with rows nondecreasing and antidiagonals unimodal.at n=25A224024Number of 5Xn 0..3 arrays with rows nondecreasing and antidiagonals unimodal.at n=2A224027