OFFSET
1,3
COMMENTS
Column 2 of A264643.
EXAMPLE
Some solutions for n=4
..1..4....4..1....0..5....0..5....0..1....0..4....0..1....0..4....4..1....4..5
..6..0....0..5....4..1....4..2....4..5....2..5....4..5....1..5....0..6....0..2
..2..5....7..2....3..6....1..7....3..6....6..1....7..2....7..2....5..2....1..7
..3..7....3..6....7..2....6..3....7..2....3..7....3..6....3..6....3..7....6..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 19 2015
STATUS
approved