Some solutions for n=1
..1....2....0....0....0....0....6....0....4....0....0....0....4....6....6....0
..2....3....0....2....5....1....5....7....2....6....2....1....2....6....2....4
..4....0....4....4....4....4....0....6....5....7....6....7....4....2....7....0
..0....3....5....2....6....1....1....7....5....4....4....5....5....2....3....6
..7....7....3....1....6....6....1....0....0....6....6....7....2....5....2....7
..7....0....0....4....5....3....4....2....7....5....0....7....0....4....6....0
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