OFFSET
1,1
COMMENTS
Column 4 of A214540
EXAMPLE
Some solutions for n=4
.....2........1........2........2........2........2........1........3
....3.1......1.1......3.1......2.2......0.4......2.2......1.1......4.2
...4.1.1....2.1.0....4.2.0....2.1.3....0.4.2....2.4.0....0.3.0....4.3.2
..1.4.0.3..2.2.0.0..2.4.0.2..3.1.0.4..2.0.4.2..1.4.3.0..0.3.0.1..4.3.3.2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 20 2012
STATUS
approved