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