OFFSET
1,1
COMMENTS
Column 4 of A222402
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..131
EXAMPLE
Some solutions for n=4
..0..1..1..1....0..0..0..0....0..0..0..0....0..0..0..1....0..0..0..1
..0..1..1..1....0..0..0..0....0..0..0..1....0..0..0..2....0..0..0..1
..1..1..1..1....1..0..0..0....0..0..0..2....0..0..0..0....0..0..0..1
..2..1..1..1....0..2..0..0....0..0..0..2....0..0..0..2....0..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 18 2013
STATUS
approved