OFFSET
1,2
COMMENTS
Column 2 of A264638.
EXAMPLE
Some solutions for n=4
..4..0....0..1....0..4....0..2....4..1....4..0....4..0....0..5....0..1....4..0
..2..1....4..5....1..5....4..6....0..6....2..5....5..1....4..1....4..5....1..5
..6..5....2..7....2..6....5..3....5..7....6..1....2..6....6..2....6..2....2..3
..3..7....6..3....3..7....1..7....2..3....7..3....3..7....3..7....3..7....6..7
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 19 2015
STATUS
approved