OFFSET
1,1
COMMENTS
Diagonal of A186019
EXAMPLE
Some solutions for 4X4
..2..0..0..0....0..0..0..0....2..0..0..0....0..0..0..0....2..0..0..0
..0..2..0..0....0..0..0..0....0..2..0..0....0..0..0..0....0..2..0..0
..0..1..2..2....1..2..1..2....0..2..3..1....2..2..0..1....2..2..0..1
..1..3..2..0....1..2..2..0....1..0..1..0....3..3..2..0....1..2..0..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 10 2011
STATUS
approved