OFFSET
1,1
COMMENTS
Column 4 of A209476.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=3
..0..0..0..0....0..0..2..2....2..2..2..2....2..0..0..0....2..1..1..1
..1..0..2..0....0..2..2..0....1..1..2..0....2..2..1..2....0..2..1..1
..1..1..0..2....1..1..1..2....1..0..0..0....0..2..1..1....2..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 09 2012
STATUS
approved