OFFSET
1,1
COMMENTS
Diagonal of A197109
EXAMPLE
Some solutions for 4X4
..1..0..0..0....1..0..3..0....1..0..3..2....1..0..3..2....1..0..2..0
..0..0..1..1....0..0..1..1....0..0..0..3....0..0..2..0....0..0..2..2
..0..0..0..0....0..1..3..3....0..1..1..3....0..1..1..2....0..1..2..3
..1..1..1..1....0..2..0..0....1..0..1..3....1..0..1..3....1..3..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 10 2011
STATUS
approved