OFFSET
1,2
COMMENTS
Diagonal of A229847
EXAMPLE
Some solutions for n=3
..0..2..0....1..1..2....0..0..0....2..0..2....1..1..1....1..2..0....1..0..0
..1..0..0....1..1..0....2..2..2....1..1..2....0..2..1....1..0..2....1..2..2
..1..2..2....1..1..2....2..0..0....2..0..0....0..2..0....1..2..0....2..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 01 2013
STATUS
approved