OFFSET
1,3
COMMENTS
Column 5 of A230533
EXAMPLE
Some solutions for n=3
..0..1..2..3..4....0..1..2..3..4....0..1..4..5..6....0..6..5..4..3
..6..0..2..1..5....6..3..2..2..5....6..2..3..6..0....1..2..5..6..2
..5..4..3..0..6....5..4..1..0..6....5..4..3..2..1....2..3..4..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 22 2013
STATUS
approved