OFFSET
1,1
COMMENTS
Column 2 of A237797
EXAMPLE
Some solutions for n=1
..2..2..0..2....2..2..2..0....0..0..0..0....2..1..1..0....1..2..1..2
..2..2..2..2....2..2..0..2....0..2..1..0....1..0..2..2....2..0..2..1
..2..2..2..0....2..2..2..2....0..0..0..1....1..1..1..1....1..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 13 2014
STATUS
approved