885188

Appears in sequences

• Number of deco polyominoes of area n. A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column.at n=15A121691
• Number of 3 X n 0..2 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.at n=13A224354