n=2的一些解
..2..1....0..1....1..2....2..0....1..2....1..2....1..2....1..2....2..2....2..0
..2..2....2..2....2..1....1..2....1..1....0..1....1..2....2..1....2..0....1..2
..2..1....1..1....0..0....1..2....2..1....2..1....2..2....2..2....1..2....1..2
..2..2....2..1....1..2....1..1....2..2....2..2....2..2....2..1....2..1....1..1
..1..2....2..2....2..2....2..1....2..2....2..1....0..1....0..1....2..2....2..1
..2..1....2..1....1..2....2..2....2..2....1..2....2..1....2..2....1..1....0..2
..2..2....0..2....1..0....2..2....2..2....2..1....1..2....2..2....2..2....1..2