OFFSET
1,1
COMMENTS
Diagonal of A224391
EXAMPLE
Some solutions for n=3
..1..1..1....1..1..2....1..2..3....0..0..1....1..2..2....1..3..3....1..1..1
..0..2..2....2..2..3....3..3..3....2..2..3....2..3..3....2..3..3....1..2..2
..2..3..3....0..2..2....1..1..2....1..2..2....0..0..1....0..1..3....0..2..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 05 2013
STATUS
approved