OFFSET
1,1
COMMENTS
Column 6 of A214540
EXAMPLE
Some solutions for n=4
.....2........3........2........3........3........2........4........3
....2.2......4.2......3.1......4.2......4.2......1.3......2.6......6.0
...4.2.0....3.4.2....2.3.1....4.3.2....5.2.2....1.5.0....6.0.6....3.6.0
..6.2.0.0..0.4.2.6..4.0.4.0..4.3.2.3..1.5.1.5..0.3.5.0..6.0.4.6..3.3.6.0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 20 2012
STATUS
approved