475962

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 right trominoes, n >= 0, k=0..n.at n=20A353963
• Number of tilings of an n X n square using right trominoes, monominoes and 2 X 2 tiles.at n=5A354067
• Expansion of (1/x) * Series_Reversion( x / ((1+x)^2+x^3)^2 ).at n=7A369504