OFFSET
1,1
COMMENTS
Diagonal of A235911
EXAMPLE
Some solutions for n=2
..2..2..0....0..2..1....0..0..1....1..1..1....1..2..0....1..0..0....2..2..0
..2..1..2....0..0..2....2..0..2....2..1..0....1..1..2....0..2..0....2..0..1
..0..2..0....1..0..0....1..2..1....2..2..0....1..2..2....1..0..1....1..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 16 2014
STATUS
approved