217969

Properties

Appears in sequences

• The number of tilings of a 3 X n rectangle using integer length rectangles with at least one side of length 1, i.e., tiles are 1 X 1, 1 X 2, ..., 1 X n, 2 X 1, 3 X 1.at n=6A254124
• Number A(n,k) of tilings of a k X n rectangle using polyominoes of shape I; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=48A254414
• Number A(n,k) of tilings of a k X n rectangle using polyominoes of shape I; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=51A254414
• Number of tilings of a 6 X n rectangle using polyominoes of shape I.at n=3A254458
• Prime numbersat n=19441