OFFSET
1,1
COMMENTS
Column 6 of A207535
EXAMPLE
Some solutions for n=4
..2..2..1..0..0..3....2..2..0..1..2..3....0..1..1..3..2..2....3..1..3..0..1..1
..0..0..1..1..1..3....2..0..1..2..2..1....1..2..2..1..3..2....1..3..2..0..1..3
..3..3..2..1..1..2....1..0..2..2..3..3....1..3..3..0..1..3....2..2..1..1..3..2
..1..1..3..1..0..0....1..2..0..2..3..1....2..1..1..2..2..1....0..1..1..3..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 18 2012
STATUS
approved