OFFSET
1,2
COMMENTS
Column 4 of A221106
EXAMPLE
Some solutions for n=3
..0..4..3..0....0..0..2..0....0..4..1..0....0..2..3..0....0..1..2..0
..0..2..0..1....0..2..2..3....2..0..3..0....1..0..2..1....4..1..0..3
..0..2..0..0....1..0..2..0....0..0..2..0....0..0..2..1....0..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 02 2013
STATUS
approved