n=4的一些解
..3..3..3....1..1..0....0..0..1....1..0..1....1..3..0....1..1..2....0..0..1
..3..1..3....0..3..1....0..1..0....0..1..1....2..1..1....0..0..1....2..0..0
..3..3..3....1..3..0....2..1..1....0..1..0....1..0..0....0..1..1....0..1..1
..3..3..3....0..1..1....0..0..1....2..0..0....1..0..0....2..0..0....0..0..1
..1..3..3....1..0..0....0..0..2....2..1..1....2..1..1....0..1..1....1..1..2
..3..3..1....3..0..1....1..2..1....0..1..1....1..3..0....0..0..1....0..3..1