OFFSET
1,1
COMMENTS
Column 6 of A251481
EXAMPLE
Some solutions for n=1
..0..0..2..0..0..1..1....0..0..2..2..1..3..0....0..0..2..2..1..3..2
..2..0..0..0..3..3..2....0..3..0..1..1..0..2....2..0..0..1..1..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 02 2014
STATUS
approved