OFFSET
1,1
COMMENTS
Column 4 of A206503
EXAMPLE
Some solutions for n=4
..0..1..2..0....0..1..2..0....0..1..2..0....0..1..2..0....0..1..2..0
..2..3..4..5....2..3..4..5....2..3..4..5....2..3..4..1....2..3..4..1
..4..5..6..3....1..0..6..1....4..0..6..1....4..5..6..7....1..5..6..7
..6..7..1..4....5..4..2..3....1..2..3..7....7..0..3..2....3..4..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 08 2012
STATUS
approved