OFFSET
1,1
COMMENTS
Row 5 of A216460
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..3....x..2..x..3....x..2..x..3....x..2..x..3....x..2..x..3
..3..x..4..x....0..x..1..x....4..x..1..x....4..x..5..x....1..x..0..x
..x..5..x..3....x..3..x..0....x..0..x..4....x..1..x..4....x..2..x..4
..3..x..6..x....4..x..5..x....2..x..3..x....3..x..5..x....4..x..0..x
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 07 2012
STATUS
approved