OFFSET
1,1
COMMENTS
Diagonal of A230796
EXAMPLE
Some solutions for n=1
..0..1..2..1....0..1..2..1....0..2..0..0....0..1..0..1....0..1..0..3
..0..1..2..3....0..1..2..3....3..1..1..3....0..1..2..3....2..1..0..3
..0..3..0..1....0..1..0..3....0..0..2..2....0..1..2..3....0..3..2..3
..2..3..0..3....0..3..0..3....3..3..3..1....0..3..0..1....2..3..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 30 2013
STATUS
approved