OFFSET
1,1
COMMENTS
Row 5 of A216612
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
..2..x..3..x....2..x..3..x....2..x..3..x....2..x..3..x....2..x..3..x
..x..1..x..2....x..4..x..1....x..0..x..4....x..4..x..2....x..1..x..4
..0..x..3..x....0..x..5..x....5..x..3..x....3..x..1..x....4..x..0..x
..x..1..x..0....x..3..x..4....x..6..x..4....x..2..x..3....x..3..x..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 10 2012
STATUS
approved