OFFSET
1,1
COMMENTS
Diagonal of A205440
EXAMPLE
Some solutions for n=4
..0..0..0..0..0....0..1..0..1..0....0..1..1..0..0....0..0..0..0..1
..0..1..0..1..0....0..0..0..0..0....1..1..0..0..1....0..1..0..1..1
..0..1..0..0..0....3..0..2..0..2....0..0..0..1..1....0..0..0..0..1
..0..0..0..3..0....3..0..0..0..0....0..1..0..0..0....0..3..3..0..1
..1..0..3..3..3....3..3..3..3..3....1..1..0..2..2....3..3..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 27 2012
STATUS
approved