OFFSET
1,2
COMMENTS
Diagonal of A230176
EXAMPLE
Some solutions for n=3
..1..0..0....0..2..1....0..0..1....1..0..2....1..1..0....0..0..2....2..1..1
..1..2..0....1..2..1....2..0..1....1..0..2....1..0..2....2..1..2....2..0..1
..2..0..2....1..0..0....1..1..2....1..1..0....1..2..2....0..1..1....0..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 11 2013
STATUS
approved