OFFSET
1,1
COMMENTS
Column 4 of A222616
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..75
EXAMPLE
Some solutions for n=3
..0..0..0..0....0..1..1..1....0..0..0..0....0..1..0..0....0..0..1..1
..1..0..0..0....1..1..1..1....1..0..0..0....2..0..0..0....2..1..1..1
..2..0..0..0....1..1..1..2....0..0..0..0....0..0..0..0....1..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 26 2013
STATUS
approved