OFFSET
1,2
COMMENTS
Diagonal of A199149
EXAMPLE
Some solutions for n=4
..0..0..1..1....0..0..1..1....0..0..1..1....0..1..1..1....0..0..1..1
..1..1..0..0....2..2..3..3....1..1..1..0....0..0..2..2....2..3..3..0
..2..2..0..3....2..2..0..0....2..0..0..0....2..2..3..2....2..0..0..0
..0..0..3..3....0..0..2..2....2..2..2..2....1..1..3..2....3..3..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 03 2011
STATUS
approved