OFFSET
1,3
COMMENTS
Column 2 of A265856.
EXAMPLE
Some solutions for n=4
..1..3....2..2....3..2....3..2....0..1....3..1....0..1....3..1....2..2....0..0
..2..2....3..1....0..2....0..2....3..2....3..1....0..2....3..2....3..3....1..1
..3..1....3..1....0..1....3..1....2..0....0..2....2..3....0..1....1..0....3..2
..0..0....0..0....1..3....0..1....1..3....2..0....3..1....0..2....1..0....3..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 16 2015
STATUS
approved