OFFSET
1,2
COMMENTS
Column 2 of A194540
EXAMPLE
Some solutions for 3X3
..0......0......0......0......0......0......0......0......0......0......0
..0.1....0.1....1.2....1.1....1.2....1.1....1.1....1.2....1.1....1.0....1.1
..2.0.0..1.0.0..0.2.0..2.0.0..2.1.2..0.2.1..2.2.1..0.1.0..2.0.2..1.2.0..0.2.0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 28 2011
STATUS
approved