OFFSET
1,2
COMMENTS
Column 4 of A221817
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..30
EXAMPLE
Some solutions for n=3
..1..1..1..2....1..1..0..0....0..2..0..1....1..1..0..1....0..2..1..1
..1..3..2..0....1..2..2..2....2..1..2..1....1..2..1..1....1..2..3..1
..0..0..1..0....0..1..2..0....0..1..2..0....1..1..2..0....0..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 26 2013
STATUS
approved