221672

Appears in sequences

• Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 1 vertically.at n=7A207508
• Number of squares in all tilings of a 6 X n rectangle using integer-sided square tiles.at n=6A226549
• Number of squares in all tilings of an n X n square using integer-sided square tiles.at n=6A226554
• Ways to tile a 5 X (2n+1) floor with tatami mats, including one monomer.at n=33A281791