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