OFFSET
1,2
COMMENTS
Column 4 of A199356
EXAMPLE
Some solutions for n=4
..0..1..0..1....0..1..0..1....0..1..0..0....0..1..0..2....0..1..0..1
..2..3..0..2....2..1..0..3....2..1..3..3....1..2..3..0....2..3..2..0
..3..1..3..2....1..3..2..3....3..3..2..1....1..3..0..1....1..0..3..2
..2..3..1..0....2..0..3..2....1..2..0..2....3..2..3..2....3..2..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 05 2011
STATUS
approved