A197901 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 3,0,2,1,1,0,0 for x=0,1,2,3,4,5,6

1, 5, 14, 69, 569, 8964, 189264, 6103090, 342274668, 29503989612

Offset

1,2

Comments

Every 0 is next to 0 3's, every 1 is next to 1 0's, every 2 is next to 2 2's, every 3 is next to 3 1's, every 4 is next to 4 1's, every 5 is next to 5 0's, every 6 is next to 6 0's

Links

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

Example

Some solutions with all values from 0 to 6 for 8X8X8
.........1................2................1................1
........1.0..............2.2..............0.1..............1.0
.......3.1.1............0.0.0............1.1.3............3.1.1
......2.1.4.1..........2.0.6.0..........1.4.1.2..........2.1.4.1
.....2.2.0.0.1........2.2.0.0.0........0.2.0.2.2........2.2.0.0.1
....0.0.0.5.2.2......3.1.0.5.0.0......0.2.2.0.0.0......0.0.5.0.2.1
...2.0.6.0.0.2.0....1.1.4.0.2.2.0....0.0.0.5.0.6.0....0.6.0.0.2.2.0
..2.2.0.0.0.0.0.0..1.0.1.1.1.2.1.1..0.0.0.0.0.0.0.0..0.0.0.0.0.1.1.1

Crossrefs

Sequence in context: A166795 A128102 A304060 * A202764 A197876 A370761

Adjacent sequences: A197898 A197899 A197900 * A197902 A197903 A197904

Keyword

nonn

Author

R. H. Hardin Oct 19 2011

Status

approved