OFFSET
1,1
COMMENTS
Diagonal of A223864
EXAMPLE
Some solutions for n=3
..0..1..2....0..0..2....0..0..1....1..0..0....3..0..0....0..1..3....0..1..1
..0..1..2....1..1..3....1..1..2....2..0..0....3..3..0....0..2..3....0..1..1
..0..3..2....1..2..3....1..3..2....3..2..2....3..3..0....0..2..3....3..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 28 2013
STATUS
approved