OFFSET
1,1
COMMENTS
Column 2 of A208581
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..109
EXAMPLE
Some solutions for n=4
..0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0
..1..1....1..0....1..0....1..0....1..1....1..0....1..0....1..1....1..0....1..0
..0..0....2..1....1..1....0..1....2..0....0..1....0..1....0..1....1..0....0..1
..1..1....0..0....2..0....0..0....0..1....1..0....0..2....0..0....0..1....1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 29 2012
STATUS
approved