323293

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=24A353877
• Number of tilings of a 3 X n rectangle using right trominoes, dominoes and 1 X 1 tiles.at n=6A353878
• Sum over all complete compositions of n of the element multiset size.at n=17A373306