OFFSET
1,1
COMMENTS
Diagonal of A237481
EXAMPLE
Some solutions for n=2
..1..2..2....1..1..1....0..0..0....2..0..2....1..0..0....0..1..0....2..2..2
..1..0..1....0..2..1....2..0..2....1..2..1....0..2..0....2..0..2....1..1..1
..2..2..1....2..1..2....1..0..1....0..1..2....0..2..0....1..0..0....0..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 08 2014
STATUS
approved