OFFSET
1,1
COMMENTS
Diagonal of A205431
EXAMPLE
Some solutions for n=4
..0..0..0..1..1....0..1..1..1..2....0..0..0..0..0....0..0..0..1..1
..2..1..0..2..1....1..2..3..1..2....0..0..1..1..0....2..2..0..1..3
..3..2..3..0..0....2..1..2..1..1....0..2..1..0..1....1..2..1..0..3
..0..1..2..1..0....0..2..1..3..0....2..0..2..0..0....3..3..2..2..0
..2..0..3..2..3....2..0..3..1..3....0..3..3..2..3....2..3..2..2..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 27 2012
STATUS
approved