OFFSET
1,1
COMMENTS
Column 3 of A229774
EXAMPLE
Some solutions for n=3
..1..1..0....2..1..1....1..1..0....1..0..0....2..1..0....1..0..0....1..1..0
..1..1..1....3..3..0....1..1..2....1..1..1....3..0..2....2..1..0....2..1..0
..1..1..1....3..3..1....3..2..0....2..3..0....3..0..3....3..1..2....2..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 29 2013
STATUS
approved