OFFSET
1,1
COMMENTS
Diagonal of A217457
EXAMPLE
Some solutions for n=3
..1..1..1....2..1..1....0..0..0....1..1..2....1..1..1....0..0..0....2..0..0
..1..1..0....1..2..1....1..0..0....1..2..0....1..2..0....0..0..0....0..0..0
..2..0..0....1..1..1....1..1..2....1..0..0....2..0..0....1..0..1....1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 03 2012
STATUS
approved