OFFSET
1,1
COMMENTS
Diagonal of A223850
EXAMPLE
Some solutions for n=3
..1..0..0....0..0..0....0..3..0....0..0..3....3..1..0....2..2..0....2..2..1
..0..2..1....2..1..0....0..3..1....0..0..3....3..3..0....2..2..3....0..1..1
..0..3..1....1..2..3....0..1..3....0..1..0....1..1..0....3..3..1....0..0..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 27 2013
STATUS
approved