OFFSET
1,1
COMMENTS
Diagonal of A219471
EXAMPLE
Some solutions for n=3
..0..0..2....0..0..0....0..0..2....0..0..2....0..0..0....1..1..2....2..2..2
..1..1..1....0..0..1....2..2..3....1..1..2....0..0..0....2..3..3....2..1..1
..2..1..2....3..1..1....3..0..0....2..0..0....0..0..0....3..3..3....3..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 20 2012
STATUS
approved