OFFSET
1,1
COMMENTS
Diagonal of A223961
EXAMPLE
Some solutions for n=3
..0..1..2....0..0..0....0..2..2....1..2..3....0..0..3....1..1..1....0..3..3
..1..2..2....0..0..1....2..2..2....1..1..2....3..3..3....2..3..3....0..0..3
..2..2..2....1..2..3....0..2..2....0..1..2....2..3..3....2..2..3....0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 29 2013
STATUS
approved