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