OFFSET
1,2
COMMENTS
Row 4 of A265656.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..18
EXAMPLE
Some solutions for n=4
..0..0..1..1....0..0..1..2....0..1..2..0....0..0..1..2....0..1..2..3
..2..3..2..0....1..2..1..0....2..1..2..0....3..3..1..3....0..3..0..1
..1..3..2..3....3..2..3..3....3..1..2..3....0..2..2..2....2..2..2..1
..0..3..2..1....3..2..0..1....3..1..0..3....1..1..0..3....1..0..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 12 2015
STATUS
approved