OFFSET
1,1
COMMENTS
Diagonal of A233602
EXAMPLE
Some solutions for n=1
..2..1..2....2..2..2....2..2..2....1..1..2....1..0..2....1..2..1....1..0..1
..1..1..0....1..2..1....2..0..1....2..2..2....0..2..2....1..1..2....2..2..1
..2..0..1....0..0..0....2..2..0....2..1..1....0..1..1....1..1..1....2..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 14 2013
STATUS
approved