OFFSET
1,1
COMMENTS
Diagonal of A206383
EXAMPLE
Some solutions for n=4
..0..0..0..1..0....0..0..0..0..1....0..1..0..1..0....0..0..0..0..0
..0..2..0..0..2....1..2..2..2..3....0..0..2..0..0....1..0..1..0..2
..3..0..0..1..0....1..3..1..0..3....3..0..0..1..0....3..1..1..1..0
..3..3..0..0..2....0..2..1..0..2....1..3..0..0..0....1..0..1..0..0
..1..3..3..0..0....3..3..3..3..1....0..1..3..0..2....3..1..1..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 07 2012
STATUS
approved