OFFSET
1,2
COMMENTS
Diagonal of A265466.
EXAMPLE
Some solutions for n=3
..0..2..4....0..2..1....0..2..3....0..2..3....0..1..2....0..2..0....0..2..3
..3..2..1....3..2..0....3..2..1....0..2..4....2..3..4....0..2..0....3..2..0
..1..3..4....1..2..4....1..3..4....3..2..4....2..3..4....0..2..4....4..2..4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 09 2015
STATUS
approved