OFFSET
1,2
COMMENTS
Column 2 of A221602
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..72
EXAMPLE
Some solutions for n=3
..0..0....0..0....1..1....1..2....2..1....0..1....0..2....1..0....0..2....1..1
..1..2....1..3....3..1....1..2....0..1....0..2....2..0....4..0....1..2....0..3
..1..2....0..2....0..0....0..0....1..1....1..2....1..1....1..0....1..0....0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 20 2013
STATUS
approved