OFFSET
1,1
COMMENTS
Diagonal of A251167
EXAMPLE
Some solutions for n=2
..0..1..1....1..2..3....1..0..2....1..0..3....0..3..3....0..2..2....0..3..3
..0..0..1....0..0..1....2..0..0....1..0..3....0..0..2....2..0..1....1..0..3
..1..1..0....3..2..1....3..2..0....3..1..0....1..0..0....3..3..2....3..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 30 2014
STATUS
approved