OFFSET
1,2
COMMENTS
Diagonal of A222794
EXAMPLE
Some solutions for n=3
..0..0..0....0..0..0....0..0..0....0..0..1....0..1..1....0..0..0....0..0..0
..0..0..1....0..0..1....0..0..1....2..3..3....2..1..1....1..2..2....0..0..0
..0..0..2....2..0..0....1..0..0....3..3..3....1..1..1....2..2..2....1..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 05 2013
STATUS
approved