777719132265domain: NAppears in sequencesTriangle read by rows: T(n,k) = number of tilings of a n X k rectangle using 2 X 2 and 1 X 1 tiles and right trominoes, n >= 0, k=0..n.at n=35A353963Number of tilings of an n X n square using right trominoes, monominoes and 2 X 2 tiles.at n=7A354067