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