n=4的一些解
..0..1..0..0..2..1..0....0..2..1..2..0..0..0....0..1..1..1..2..2..0
..0..2..0..2..0..0..0....2..2..0..0..0..1..0....0..0..2..0..1..2..2
..2..2..0..0..0..0..0....1..1..2..1..0..0..0....1..2..2..2..0..0..0
..2..0..1..0..1..0..0....0..0..0..2..0..2..1....0..2..1..1..0..1..2
