OFFSET
1,2
COMMENTS
Diagonal of A183526
EXAMPLE
Some solutions for 3X3
..0..0..2....2..2..2....1..1..1....0..0..0....0..1..0....2..0..0....1..2..0
..0..2..0....0..1..0....1..1..0....0..1..0....2..1..2....2..0..1....1..1..1
..0..0..0....0..0..0....1..0..1....1..0..0....1..1..0....0..0..1....0..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 05 2011
STATUS
approved