OFFSET
1,1
COMMENTS
Diagonal of A235972
EXAMPLE
Some solutions for n=2
..1..1..0....0..2..3....0..1..1....1..0..0....3..1..2....3..0..3....2..3..0
..0..0..0....0..3..1....0..2..3....3..2..0....3..2..1....0..2..3....1..1..1
..0..2..2....3..1..1....0..0..3....1..3..2....1..0..0....1..0..0....0..3..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 17 2014
STATUS
approved