OFFSET
1,2
COMMENTS
Column 5 of A221240
EXAMPLE
Some solutions for n=3
..0..1..0..1..0....0..1..0..1..0....0..2..0..2..0....0..1..0..0..1
..0..2..2..3..3....0..5..1..3..1....0..3..2..2..3....0..2..2..3..0
..0..1..2..0..0....0..2..1..0..0....0..0..0..1..0....0..2..2..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 06 2013
STATUS
approved