OFFSET
1,2
COMMENTS
Diagonal of A232309
EXAMPLE
Some solutions for n=3
..1..2..2....0..1..1....2..1..1....1..2..0....2..2..2....1..2..0....2..1..0
..1..2..1....1..2..0....2..0..2....2..1..1....2..0..1....0..0..1....1..1..2
..0..2..2....0..2..1....2..2..1....2..2..0....1..2..2....2..0..2....0..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 22 2013
STATUS
approved