OFFSET
1,1
COMMENTS
Diagonal of A231651
EXAMPLE
Some solutions for n=3
..0..0..0....0..2..1....1..1..2....0..0..1....0..2..0....2..0..0....0..0..0
..0..0..2....0..1..1....0..0..1....2..0..1....0..0..0....1..0..0....0..2..1
..1..1..1....0..1..1....0..0..1....1..0..0....0..0..2....1..2..2....0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 12 2013
STATUS
approved