Some solutions for n=3
..0..0..2....0..0..1....0..0..0....0..0..1....0..0..2....0..0..1....0..1..0
..0..4..0....0..6..0....1..3..0....0..3..2....0..4..0....2..2..0....0..4..2
..2..0..0....1..2..0....2..4..0....1..2..0....0..2..1....0..4..0....0..2..1
..1..2..0....0..1..1....0..2..1....1..1..0....0..2..0....2..2..0....0..1..1
..0..4..0....2..1..0....1..1..0....0..4..0....2..2..0....0..2..0....1..2..0
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