Some solutions for n=2
..0..x..0..x..0....0..x..0..x..2....0..x..2..x..2....0..x..0..x..0
..x..1..x..1..x....x..1..x..3..x....x..1..x..3..x....x..1..x..1..x
..0..x..2..x..0....0..x..2..x..2....0..x..0..x..2....0..x..2..x..2
..x..3..x..1..x....x..1..x..1..x....x..1..x..3..x....x..1..x..3..x
..2..x..0..x..0....0..x..0..x..0....0..x..2..x..2....0..x..0..x..2
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