OFFSET
1,1
COMMENTS
Row 6 of A216338
EXAMPLE
Some solutions for n=4
..0..x..1..x....0..x..1..x....0..x..1..x....0..x..1..x....0..x..1..x
..x..2..x..0....x..0..x..2....x..0..x..2....x..0..x..2....x..0..x..2
..0..x..3..x....3..x..4..x....2..x..3..x....3..x..4..x....3..x..0..x
..x..1..x..0....x..5..x..3....x..2..x..1....x..5..x..1....x..4..x..5
..4..x..5..x....6..x..7..x....4..x..5..x....0..x..2..x....5..x..0..x
..x..0..x..5....x..2..x..1....x..0..x..6....x..4..x..3....x..2..x..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 04 2012
STATUS
approved