OFFSET
1,1
COMMENTS
Column 4 of A268003.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..17
EXAMPLE
Some solutions for n=2
..0..1..1..0....0..0..1..2....0..1..0..2....0..1..2..1....0..1..0..0
..0..1..2..2....0..1..3..3....3..3..0..1....3..0..4..1....2..0..3..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 24 2016
STATUS
approved