OFFSET
1,1
COMMENTS
Column 4 of A268180.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..16
EXAMPLE
Some solutions for n=2
..0..1..2..3....0..1..1..0....0..1..1..2....0..1..2..0....0..1..1..0
..1..4..2..4....1..1..0..2....0..3..0..4....3..0..3..1....0..1..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 28 2016
STATUS
approved