OFFSET
1,1
COMMENTS
Column 7 of A219460
EXAMPLE
Some solutions for n=3
..0..0..1..2..2..2..2....0..0..0..2..3..3..3....0..0..0..0..1..1..2
..0..0..1..1..2..2..2....0..0..0..1..2..2..2....0..0..0..0..1..1..1
..0..0..1..1..2..3..3....0..0..0..1..2..2..2....0..0..2..2..3..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 20 2012
STATUS
approved