OFFSET
1,2
COMMENTS
Column 7 of A239986
EXAMPLE
Some solutions for n=3
..3..0..0..0..0..0..0....3..0..0..0..0..0..0....3..0..0..0..0..0..0
..3..1..3..0..0..0..0....2..3..0..0..3..3..0....2..3..0..0..3..3..0
..3..2..2..1..3..0..0....2..0..0..3..3..3..1....2..0..0..3..0..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 30 2014
STATUS
approved