OFFSET
1,1
COMMENTS
Row 4 of A267742.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..31
EXAMPLE
Some solutions for n=4
..0..1..2..3....0..0..0..0....0..1..2..2....0..0..1..2....0..1..2..3
..2..2..3..0....1..1..1..2....2..3..3..0....1..2..2..3....2..3..0..1
..2..3..0..1....1..2..2..3....3..0..1..1....3..3..0..1....0..0..1..2
..3..0..1..1....2..3..3..3....0..1..2..3....0..1..2..3....1..2..3..3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 20 2016
STATUS
approved