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