OFFSET
1,1
COMMENTS
Column 3 of A187699
EXAMPLE
Some solutions for 4X4
..2..2..1..2....0..3..0..3....1..2..2..2....2..3..1..0....0..1..0..1
..3..0..3..0....2..1..2..1....2..0..2..0....1..3..0..3....3..1..3..1
..2..2..0..2....0..2..0..2....2..2..0..2....2..3..1..2....3..2..3..2
..3..0..3..2....3..2..3..3....2..0..2..1....1..3..0..3....3..1..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 12 2011
STATUS
approved