OFFSET
1,1
COMMENTS
Column 1 of A237747
EXAMPLE
Some solutions for n=1
..3..0..0....1..0..2....2..3..2....2..3..2....2..1..2....2..1..2....3..1..2
..1..0..1....0..0..0....2..0..1....1..3..3....0..2..0....0..1..2....3..3..0
..1..3..3....3..0..1....2..3..3....0..1..1....0..3..1....3..2..0....3..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 12 2014
STATUS
approved