OFFSET
1,1
COMMENTS
Diagonal of A219802
EXAMPLE
Some solutions for n=3
..0..0..0....3..0..0....2..0..0....2..1..1....1..1..1....0..0..0....2..2..2
..0..0..0....3..0..0....2..0..0....1..1..1....1..1..1....0..0..0....2..2..2
..1..1..3....3..1..1....2..0..0....1..1..1....3..3..3....1..1..1....3..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 28 2012
STATUS
approved