OFFSET
1,1
COMMENTS
Row 4 of A267425.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..41
EXAMPLE
Some solutions for n=9
..0..0..1..1..1..2..2..3..3....0..0..0..1..1..2..2..3..3
..0..1..1..2..2..2..3..3..0....0..1..1..1..2..2..3..3..3
..1..1..2..2..3..3..3..0..0....1..1..1..2..2..3..3..0..0
..1..2..2..3..3..0..0..0..1....1..2..2..2..3..3..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 14 2016
STATUS
approved