90916452

Appears in sequences

• Triangle read by rows: T(n,k) = number of tilings of a n X k rectangle using right trominoes, dominoes and 1 X 1 tiles, n >= 0, k = 0..n.at n=20A353877
• Number of tilings of an n X n square using right trominoes, dominoes, and monominoes.at n=5A353934