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