A192603 Number of nXnXn triangular 0..4 arrays with each element equal to at least one neighbor and new values 0..4 introduced in row major order

0, 1, 12, 572, 167774, 259518712, 1697443501971

Offset

1,3

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for 4X4X4
.....0........0........0........0........0........0........0........0
....1.0......0.1......0.0......0.0......1.0......1.0......1.0......0.1
...1.2.2....0.1.2....0.1.0....0.0.1....0.1.1....1.2.0....1.2.2....2.1.3
..2.2.2.2..3.3.2.2..0.1.1.0..2.2.0.1..0.1.2.2..1.2.2.0..2.2.3.3..2.4.4.3

Crossrefs

Sequence in context: A192602 A227143 A274259 * A192604 A192605 A192606

Adjacent sequences: A192600 A192601 A192602 * A192604 A192605 A192606

Keyword

nonn

Author

R. H. Hardin Jul 04 2011

Status

approved