A192606 Number of nXnXn triangular 0..7 arrays with each element equal to at least one neighbor and new values 0..7 introduced in row major order

0, 1, 12, 572, 174202, 381175052

Offset

1,3

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for 6X6X6 all containing a 7
.......0............0............0............0............0............0
......1.0..........0.1..........1.0..........1.0..........0.1..........1.0
.....1.2.0........2.2.1........1.2.3........1.2.3........2.1.3........1.2.3
....0.2.3.3......0.2.3.4......4.4.2.3......0.2.3.4......0.2.3.4......0.2.4.3
...0.4.4.5.6....0.5.6.3.4....0.5.5.6.2....0.5.2.4.6....0.5.5.4.6....0.5.4.6.6
..0.0.7.7.5.6..0.0.5.6.7.7..0.0.7.7.6.2..0.0.5.7.7.6..0.0.7.7.6.6..0.0.5.5.7.7

Crossrefs

Sequence in context: A192603 A192604 A192605 * A179424 A316977 A283490

Adjacent sequences: A192603 A192604 A192605 * A192607 A192608 A192609

Keyword

nonn

Author

R. H. Hardin Jul 04 2011

Status

approved