OFFSET
1,2
COMMENTS
Column 4 of A221351
EXAMPLE
Some solutions for n=3
..1..0..0..0....1..1..2..0....0..0..0..0....1..1..2..0....1..2..2..0
..1..5..2..1....0..2..3..1....1..3..2..2....0..2..0..0....0..3..0..1
..0..0..2..0....0..2..0..0....0..1..3..0....1..3..2..0....0..0..3..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 11 2013
STATUS
approved