OFFSET
1,1
COMMENTS
Column 3 of A200809
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for 4X4
..2..0..1....0..1..0....0..1..0....1..0..1....2..1..2....0..1..0....0..1..2
..0..1..1....0..0..0....2..0..0....1..1..1....2..1..1....2..0..0....0..1..1
..0..0..0....1..1..0....2..0..0....1..0..1....1..1..1....0..0..0....2..0..0
..1..2..0....0..0..2....0..0..2....0..0..1....2..2..2....0..2..0....0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 22 2011
STATUS
approved