OFFSET
1,2
COMMENTS
Column 6 of A217510
EXAMPLE
Some solutions for n=4
.....0........0........0........3........2........3........3........0
....0.2......3.1......0.1......0.0......0.0......2.0......1.1......4.1
...1.6.1....2.3.1....4.3.1....2.1.2....0.2.2....1.0.2....1.0.1....0.1.1
..0.0.0.0..0.0.0.0..0.0.0.1..0.1.1.0..1.2.1.0..1.1.0.0..0.3.0.0..1.2.0.0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 05 2012
STATUS
approved