OFFSET
1,1
COMMENTS
Diagonal of A187441.
EXAMPLE
Some solutions for 3 X 3
..1..1..0....1..1..2....1..1..0....2..0..2....1..0..0....1..0..1....2..1..0
..1..2..0....2..1..0....1..2..2....1..1..1....2..1..2....1..1..0....1..1..0
..2..0..1....1..1..1....1..1..1....1..0..1....2..2..2....0..2..2....1..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 10 2011
STATUS
approved