OFFSET
1,1
COMMENTS
Diagonal of A236155
EXAMPLE
Some solutions for n=3
..1..2..0..0....1..1..2..2....0..2..0..0....1..2..2..0....1..2..0..1
..2..1..1..1....0..1..0..0....0..2..1..1....0..2..0..1....2..1..0..0
..0..0..1..1....2..1..0..0....2..1..1..1....2..0..1..0....0..0..0..0
..0..0..2..1....2..2..0..2....2..2..0..1....0..1..0..2....0..1..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 19 2014
STATUS
approved