A192898 Number of nXnXn triangular 0..2 arrays with each element equal to at least two neighbors and with new values 0..2 introduced in row major order

0, 1, 1, 10, 89, 3427, 209934, 27387476, 7391213713, 4009901087529

Offset

1,4

Links

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

Example

Some solutions for 5X5X5
......0..........0..........0..........0..........0..........0..........0
.....0.0........0.0........0.0........0.0........0.0........0.0........0.0
....1.1.1......1.0.2......0.0.0......0.0.0......0.1.1......1.1.1......1.1.0
...2.1.1.1....1.1.2.2....1.2.2.2....0.0.1.1....0.1.1.1....1.1.1.1....0.1.1.0
..2.2.1.1.1..1.1.1.2.2..1.1.2.2.2..0.0.0.1.1..0.0.1.1.1..1.1.1.1.1..0.0.1.0.0

Crossrefs

Sequence in context: A120923 A057081 A024132 * A044261 A065690 A202919

Adjacent sequences: A192895 A192896 A192897 * A192899 A192900 A192901

Keyword

nonn

Author

R. H. Hardin Jul 12 2011

Status

approved