n=5的一些解
..0..1..0..1....0..1..0..1....0..1..0..1....0..1..0..1....0..1..0..1
..1..0..1..0....1..0..1..0....1..2..3..2....1..0..1..0....1..2..1..0
..0..1..0..1....0..1..2..1....0..1..0..1....0..1..2..1....0..1..0..1
..1..2..1..0....1..0..1..0....1..0..1..0....1..0..1..0....1..2..1..0
..0..1..0..1....0..1..3..1....0..1..0..1....0..1..0..1....0..1..2..1