OFFSET
1,3
COMMENTS
Diagonal of A199256
EXAMPLE
Some solutions for n=4
..0..1..2..3....0..1..2..0....0..1..0..1....0..1..2..3....0..1..2..1
..3..2..3..1....2..3..1..3....1..2..3..2....1..2..0..2....3..0..3..0
..2..0..1..0....0..1..2..1....0..3..2..0....3..1..3..0....2..3..2..1
..3..1..0..2....3..2..0..3....3..1..3..2....1..3..0..2....3..2..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 04 2011
STATUS
approved