OFFSET
1,2
COMMENTS
Diagonal of A208466
EXAMPLE
Some solutions for n=4
..0..0..0..0....0..0..0..0....0..0..1..0....0..0..0..0....0..0..0..0
..0..1..0..0....0..1..0..0....0..0..0..0....0..1..0..0....0..1..2..0
..0..2..0..1....0..1..1..0....0..1..0..2....2..0..1..0....0..0..0..0
..0..0..0..0....0..0..0..1....1..0..0..0....0..0..0..0....1..0..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 27 2012
STATUS
approved