OFFSET
1,1
COMMENTS
Column 6 of A220931
EXAMPLE
Some solutions for n=3
..0..0..0..0..1..3....1..1..0..0..1..3....0..0..0..1..0..0....0..0..0..0..0..2
..0..0..0..1..1..1....1..0..0..0..0..0....0..0..1..0..0..0....0..0..0..0..2..0
..0..3..3..1..1..1....2..0..0..0..0..0....2..1..0..0..0..1....2..2..3..3..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 25 2012
STATUS
approved