OFFSET
1,1
COMMENTS
Column 3 of A214906
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..89
EXAMPLE
Some solutions for n=4
.....1........1........1........2........1........2........1........1
....1.1......1.1......0.2......2.2......0.2......2.2......0.2......1.1
...1.1.1....0.1.2....0.0.3....0.3.3....0.0.3....1.2.3....0.1.2....1.1.1
..0.1.1.2..0.1.1.2..0.1.1.2..0.2.3.3..1.1.1.1..0.2.3.3..0.0.2.2..0.0.2.2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 29 2012
STATUS
approved