A203120 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 6,2,1,1,1,0,1 for x=0,1,2,3,4,5,6

1, 4, 22, 186, 6533, 192632, 19111567, 3204615373, 1000664675682

Offset

1,2

Comments

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

Links

Table of n, a(n) for n=1..9.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........2..............2..............1..............0..............1
.......1.1............1.1............0.2............1.2............2.0
......1.6.1..........1.6.1..........0.1.0..........3.1.0..........0.1.0
.....2.1.1.2........2.1.1.2........2.1.3.2........2.1.0.2........2.1.3.2
....0.0.3.0.0......0.3.0.0.0......0.1.4.1.1......0.1.4.1.1......0.1.4.1.1
...0.5.2.1.1.2....2.1.1.2.5.0....0.5.0.1.6.1....0.5.0.1.6.1....0.5.0.1.6.1
..0.0.0.1.4.1.0..0.1.4.1.0.0.0..0.0.0.2.1.1.2..0.0.0.2.1.1.2..0.0.0.2.1.1.2

Crossrefs

Sequence in context: A220231 A112370 A197961 * A002728 A364624 A062494

Adjacent sequences: A203117 A203118 A203119 * A203121 A203122 A203123

Keyword

nonn

Author

R. H. Hardin Dec 29 2011

Status

approved