OFFSET
1,1
COMMENTS
Column 5 of A252904
EXAMPLE
Some solutions for n=1
..0..0..1..1..2..2..0....0..1..1..0..1..0..0....0..0..1..0..1..0..1
..3..3..1..1..2..2..0....1..1..2..2..1..1..0....0..2..2..0..0..1..0
..0..0..3..0..0..1..1....0..2..2..0..0..1..1....1..2..1..1..0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 24 2014
STATUS
approved