OFFSET
1,2
COMMENTS
Row 3 of A266921.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..132
EXAMPLE
Some solutions for n=7
..0..2..1..0..2..0..1....0..2..1..2..0..1..2....0..1..2..0..2..1..2
..0..1..0..2..1..2..1....0..1..0..1..2..0..1....2..0..1..2..1..0..1
..2..1..2..1..0..2..0....2..1..2..0..1..2..0....1..2..0..1..0..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 06 2016
STATUS
approved