OFFSET
1,3
COMMENTS
Column 3 of A222522
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..207
EXAMPLE
Some solutions for n=4
..0..1..1....0..1..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..2..2..2....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....1..1..1
..2..2..2....0..0..0....0..0..0....1..1..1....0..0..0....1..0..0....1..1..1
..2..2..2....0..0..0....1..1..2....1..1..1....1..2..2....0..0..0....1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 23 2013
STATUS
approved