OFFSET
1,2
COMMENTS
Diagonal of A231441
EXAMPLE
Some solutions for n=5
..0..0..1..1..1..1..1....0..0..1..1..1..0..0....0..0..1..1..2..2..2
..0..0..1..1..1..1..1....0..0..1..1..1..0..0....0..0..1..1..2..2..2
..0..0..0..1..1..1..1....0..0..1..1..1..1..0....0..0..0..1..1..2..2
..0..0..0..1..1..1..1....0..0..1..1..1..1..0....0..0..0..1..1..3..3
..1..1..1..0..0..0..0....0..0..0..1..1..0..0....0..0..0..1..3..3..3
..1..1..1..0..0..0..0....0..0..0..0..0..0..0....0..0..1..1..3..3..3
..1..1..1..0..0..0..0....0..0..0..0..0..0..0....0..0..1..1..3..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 09 2013
STATUS
approved