3863372domain: NAppears in sequencesNumber of n X 3 0..3 arrays with rows, diagonals and antidiagonals unimodal.at n=3A223871T(n,k)=Number of nXk 0..3 arrays with rows, diagonals and antidiagonals unimodal.at n=18A223876Number of 4Xn 0..3 arrays with rows, diagonals and antidiagonals unimodal.at n=2A223878