4005785

Appears in sequences

• Number of ways to tile a 6 X n rectangle with 1 X 1 and 2 X 2 tiles.at n=10A063650
• Number of ways to tile a 10 X n rectangle with 1 X 1 and 2 X 2 tiles.at n=6A063654
• Number of n X n binary matrices, symmetric under horizontal reflection, with no more than 1 one in any 2 X 2 subblock.at n=9A141482