OFFSET
1,1
COMMENTS
Row 6 of A216084
EXAMPLE
Some solutions for n=4
..x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..1
..1..x..2..x....1..x..2..x....2..x..0..x....1..x..2..x....1..x..2..x
..x..0..x..3....x..3..x..4....x..1..x..0....x..3..x..4....x..3..x..0
..4..x..0..x....4..x..5..x....2..x..3..x....4..x..5..x....0..x..2..x
..x..2..x..4....x..4..x..6....x..4..x..5....x..3..x..0....x..0..x..2
..5..x..6..x....1..x..7..x....2..x..0..x....1..x..4..x....4..x..1..x
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 01 2012
STATUS
approved