OFFSET
1,1
COMMENTS
Column 7 of A199201
EXAMPLE
Some solutions for n=4
..0..0..1..2..3..2..3....0..0..1..2..1..2..1....0..0..1..2..3..2..1
..0..0..2..3..1..3..2....0..0..2..3..2..3..2....0..0..2..3..1..3..2
..1..2..1..2..3..1..0....1..3..0..2..3..2..3....1..3..1..0..3..2..1
..0..1..3..0..1..2..3....0..1..3..0..1..3..1....0..1..2..3..0..3..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 03 2011
STATUS
approved