OFFSET
1,1
COMMENTS
Diagonal of A224024
EXAMPLE
Some solutions for n=3
..0..0..1....0..1..1....2..3..3....1..1..1....0..3..3....2..2..3....2..3..3
..1..2..3....1..2..3....3..3..3....0..0..2....1..3..3....1..2..3....1..1..3
..0..2..3....0..0..2....1..1..3....0..2..2....0..1..1....0..2..2....0..1..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 30 2013
STATUS
approved