OFFSET
1,1
COMMENTS
Column 7 of A220010
EXAMPLE
Some solutions for n=3
..2..0..0..1..1..1..0....2..2..1..1..1..1..1....3..3..2..1..1..0..0
..0..0..0..1..1..0..0....2..1..0..0..1..1..1....3..3..2..1..1..0..0
..0..0..1..1..2..0..0....1..0..0..0..2..1..1....3..3..3..3..3..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 03 2012
STATUS
approved