OFFSET
1,1
COMMENTS
Column 3 of A215182
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..89
EXAMPLE
Some solutions for n=4
.....0........1........1........1........2........2........1........1
....0.0......0.2......1.1......0.2......2.2......1.3......0.2......0.2
...0.0.0....0.1.2....1.1.1....0.0.3....1.2.3....1.2.3....0.1.2....0.1.2
..0.0.0.0..0.0.1.3..0.0.1.3..0.0.1.3..1.2.2.3..1.2.2.3..0.1.1.2..0.0.2.2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 05 2012
STATUS
approved