OFFSET
1,3
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..17
EXAMPLE
All solutions for 3X3X3
....0......0......0......0......0......0......0......0......0
...0.0....0.1....0.1....0.0....1.0....1.0....1.0....0.1....0.0
..0.1.1..0.1.1..1.1.1..1.1.0..1.0.0..1.1.1..1.1.0..0.0.1..1.1.1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 08 2011
STATUS
approved