OFFSET
1,1
COMMENTS
Diagonal of A239047
EXAMPLE
Some solutions for n=3
..2..2..3....2..0..2....0..0..2....0..0..3....3..2..0....0..0..0....0..3..3
..2..2..2....2..0..0....3..2..0....3..3..2....3..2..3....0..0..2....2..2..2
..0..0..0....3..3..1....2..1..2....2..1..3....0..2..1....3..3..1....0..0..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 09 2014
STATUS
approved