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