OFFSET
1,1
COMMENTS
Diagonal of A210413
EXAMPLE
Some solutions for n=4
..0..0..0..0..0....0..0..0..1..2....0..0..0..0..0....0..0..0..0..0
..1..2..1..2..1....1..3..1..2..3....1..2..3..2..1....1..2..1..2..3
..2..0..1..0..3....3..2..2..0..2....1..3..0..3..2....2..3..3..2..0
..2..3..1..2..1....2..1..3..0..1....3..0..1..0..2....0..0..1..2..3
..1..3..2..0..3....1..3..2..1..2....1..3..2..0..1....2..3..0..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 21 2012
STATUS
approved