OFFSET
1,1
COMMENTS
Column 4 of A223048
EXAMPLE
Some solutions for n=3
..1..0..1..2....0..1..0..1....0..0..1..0....0..0..0..2....0..1..1..0
..1..1..2..1....0..1..2..0....0..0..2..1....0..1..1..0....1..0..1..1
..2..0..2..2....1..1..1..1....0..2..2..2....2..0..0..2....0..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 12 2013
STATUS
approved