OFFSET
1,1
COMMENTS
Column 5 of A199201
EXAMPLE
Some solutions for n=4
..0..1..0..2..0....0..1..2..3..2....0..1..2..1..3....0..1..2..3..1
..1..0..3..1..2....1..3..0..2..3....1..2..0..3..0....1..3..0..2..3
..2..3..1..2..3....0..2..1..3..0....2..1..3..1..3....2..1..3..0..1
..3..0..3..1..2....1..3..0..2..1....0..3..2..0..2....0..2..0..2..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 03 2011
STATUS
approved