1355115601

Appears in sequences

• Number of ways to tile an n X n square with 1 X 1 and 2 X 2 tiles.at n=9A063443
• Number of ways to tile a 9 X n rectangle with 1 X 1 and 2 X 2 tiles.at n=9A063653
• 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=15A141483
• 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=18A141483