OFFSET
1,2
COMMENTS
Diagonal of A231049
EXAMPLE
Some solutions for n=4
..0..1..0..1....0..3..0..3....0..1..2..1....0..3..0..1....0..1..0..1
..0..3..2..3....2..1..2..1....0..3..0..1....0..1..2..1....0..3..2..1
..2..3..0..1....3..0..3..0....0..3..2..3....2..1..2..1....0..3..0..3
..2..1..2..1....3..2..1..2....2..1..0..1....0..3..0..1....2..1..2..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 03 2013
STATUS
approved