5684228

Appears in sequences

• Triangle 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 dominoes, n >= 0, k = 0..n.at n=20A352589
• Number of tilings of a 5 X n rectangle using 2 X 2 and 1 X 1 tiles and dominoes.at n=5A352591
• Number of tilings of an n X n square using dominoes, monominoes and 2 X 2 tiles.at n=5A353777