OFFSET
1,1
COMMENTS
Column 5 of A239155
EXAMPLE
Some solutions for n=2
..0..1..2..0..1..3....0..1..2..3..2..3....0..1..2..2..3..1....0..1..2..1..3..0
..0..1..2..0..1..3....0..1..2..3..2..3....0..1..2..2..3..1....0..1..2..1..3..0
..0..1..2..0..1..3....0..1..2..3..2..3....0..1..2..2..3..1....0..1..2..1..3..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 11 2014
STATUS
approved