OFFSET
1,1
COMMENTS
Column 3 of A197109
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for 4X4
..1..0..0....1..0..0....0..0..0....1..0..0....1..0..0....1..0..0....1..0..0
..0..2..2....1..2..2....3..2..1....0..2..3....0..0..3....0..0..3....1..1..3
..3..3..3....3..1..3....0..1..3....2..2..2....2..1..1....1..0..2....0..2..0
..2..3..1....0..2..0....2..2..1....2..3..3....0..2..3....0..2..0....3..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 10 2011
STATUS
approved