Some solutions for n=4
..0..1..2..0..1..3..2..1....0..1..0..1..0..1..0..1....0..1..2..0..1..2..0..2
..1..2..0..2..0..4..3..2....1..0..1..0..1..0..1..0....2..3..4..3..2..3..4..3
..0..5..1..3..1..0..4..5....0..1..0..1..0..1..2..1....4..0..5..0..4..5..3..0
..3..2..4..0..3..2..5..1....3..2..4..5..1..2..4..2....5..4..3..1..5..3..0..1
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