OFFSET
1,2
COMMENTS
Row 4 of A267392.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..37
EXAMPLE
Some solutions for n=4
..0..0..0..1....0..0..0..1....0..1..1..1....0..0..1..1....0..0..1..2
..0..1..1..2....1..1..1..2....1..2..2..2....0..1..2..2....1..1..2..3
..1..2..2..3....2..2..2..3....2..3..3..3....1..2..3..3....1..2..3..3
..2..3..3..3....3..3..3..0....3..0..0..0....2..3..3..0....2..3..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 13 2016
STATUS
approved