12727570

Appears in sequences

• Number of ways to tile an n X n square with 1 X 1 and 2 X 2 tiles.at n=8A063443
• Number of ways to tile an 8 X n rectangle with 1 X 1 and 2 X 2 tiles.at n=8A063652
• Number of n X n binary matrices, symmetric under horizontal and vertical reflection, with no more than 1 one in any 2 X 2 subblock.at n=13A141483
• Number of n X n binary matrices, symmetric under horizontal and vertical reflection, with no more than 1 one in any 2 X 2 subblock.at n=16A141483