OFFSET
1,1
COMMENTS
Column 7 of A219578
EXAMPLE
Some solutions for n=3
..2..2..1..1..1..0..0....2..2..2..0..0..0..0....2..1..1..1..1..0..0
..2..1..1..1..1..0..0....3..2..0..0..0..0..0....1..1..1..1..1..1..0
..1..1..1..1..3..1..0....3..3..2..0..0..1..2....3..1..2..2..2..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 23 2012
STATUS
approved