OFFSET
1,2
COMMENTS
Column 4 of A199237
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..19
EXAMPLE
Some solutions for n=5
..0..0..0..1....0..0..0..1....0..0..0..1....0..0..1..0....0..0..1..1
..1..2..2..1....0..0..1..1....0..2..2..1....1..1..1..0....0..2..2..1
..1..1..0..2....2..2..1..2....1..2..0..0....2..2..1..2....2..2..1..1
..1..0..0..2....0..0..1..2....1..1..0..2....0..2..1..2....2..2..0..0
..1..2..2..2....2..2..1..2....1..1..2..2....0..0..2..2....1..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 04 2011
STATUS
approved