OFFSET
1,1
COMMENTS
Diagonal of A186579
EXAMPLE
Some solutions for 4X4
..0..0..0..0....0..2..1..3....0..0..0..0....2..0..0..1....1..0..3..1
..0..0..0..0....0..0..2..1....0..0..0..0....0..2..0..0....3..1..0..3
..3..0..0..0....0..0..0..2....2..0..0..0....0..0..2..0....0..3..1..0
..0..0..0..0....0..0..0..0....4..0..0..0....3..0..0..2....1..0..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 24 2011
STATUS
approved