1,4

Table of n, a(n) for n=1..10.

All solutions for 4X4X4

.....0........0........0

....0.0......0.0......0.0

...1.1.2....1.0.2....1.2.2

..1.1.2.2..1.1.2.2..1.1.2.2

Sequence in context: A147797 A139161 A238990 * A239039 A228456 A238717

Adjacent sequences: A192885 A192886 A192887 * A192889 A192890 A192891

nonn

R. H. Hardin Jul 11 2011

approved