OFFSET
1,1
COMMENTS
Diagonal of A229445
EXAMPLE
Some solutions for n=4
..0..2..2..2....0..2..2..2....0..2..2..2....0..0..0..0....1..1..1..1
..1..0..2..2....1..0..0..2....1..0..0..2....1..1..1..1....2..2..2..2
..1..1..0..0....2..1..1..0....1..1..1..0....1..1..1..1....2..2..2..2
..2..1..0..0....2..1..1..1....2..1..1..0....2..2..2..2....2..2..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 23 2013
STATUS
approved