OFFSET
1,1
COMMENTS
Diagonal of A233691
EXAMPLE
Some solutions for n=3
..1..3..2..3....0..2..3..2....0..2..0..2....0..1..0..1....1..3..2..0
..0..1..0..1....2..3..1..3....1..0..1..3....2..0..2..3....2..1..0..1
..1..3..2..0....3..1..2..1....3..1..3..2....3..1..0..2....1..3..2..3
..0..1..3..1....2..3..1..3....2..0..2..0....2..0..2..1....2..1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 14 2013
STATUS
approved