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