OFFSET
1,1
COMMENTS
Column 3 of A220800
EXAMPLE
Some solutions for n=3
..1..0..0....2..1..1....1..0..0....2..2..1....0..2..2....2..1..0....2..2..2
..3..2..1....1..0..1....1..0..1....3..2..1....2..3..2....1..2..2....1..1..1
..2..2..1....0..1..1....0..1..2....1..1..1....1..1..1....0..2..2....1..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 21 2012
STATUS
approved