OFFSET
1,1
COMMENTS
Diagonal of A250527
EXAMPLE
Some solutions for n=3
..2..1..2..1....1..1..0..0....2..2..1..1....2..1..2..0....2..0..1..0
..1..0..1..0....0..0..0..0....1..1..0..0....2..1..2..1....2..1..2..2
..1..1..2..1....1..1..2..2....2..2..1..1....1..1..2..2....2..1..2..2
..0..0..2..1....0..1..2..2....0..2..1..2....0..1..2..2....0..1..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 24 2014
STATUS
approved