OFFSET
1,2
COMMENTS
Diagonal of A203975
EXAMPLE
Some solutions for n=4
..0..0..0..0....0..0..1..0....0..0..0..0....0..0..1..0....0..0..1..2
..1..1..0..1....1..1..0..0....0..1..1..1....1..1..0..0....0..0..0..0
..0..0..0..1....0..0..1..2....1..2..0..0....0..1..0..0....0..1..0..1
..1..0..1..0....0..0..0..0....2..0..1..2....0..1..2..1....0..0..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 08 2012
STATUS
approved