OFFSET
1,1
COMMENTS
Column 4 of A222522
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..92
EXAMPLE
Some solutions for n=4
..0..0..0..0....0..0..0..1....0..0..0..1....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..0..1....0..0..0..0....0..0..0..0....1..0..0..0
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....1..0..0..0
..1..0..2..2....0..0..0..2....0..0..0..2....1..2..2..0....1..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 23 2013
STATUS
approved