A207152 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 6,0,0,0,2,0,1 for x=0,1,2,3,4,5,6

1, 7, 39, 433, 8739, 299157, 18392685, 2000831273, 383836993467, 130672069239103

Offset

1,2

Comments

Every 0 is next to 0 6's, every 1 is next to 1 0's, every 2 is next to 2 0's, every 3 is next to 3 0's, every 4 is next to 4 2'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..10.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........2..............0..............0..............1..............0
.......0.0............1.1............2.2............0.2............0.0
......0.5.0..........1.6.1..........0.4.0..........2.4.0..........0.5.0
.....0.3.0.0........0.1.1.0........3.2.2.0........0.2.2.0........0.0.3.0
....1.1.2.0.2......0.2.1.3.0......0.0.1.1.1......0.0.1.1.1......2.0.2.1.1
...1.6.1.2.4.2....2.4.2.0.5.0....0.5.3.1.6.1....0.5.3.1.6.1....2.4.2.1.6.1
..0.1.1.0.2.0.0..0.2.0.3.0.0.2..2.0.0.0.1.1.0..2.0.0.0.1.1.0..0.0.2.0.1.1.0

Crossrefs

Sequence in context: A305361 A202763 A035357 * A135059 A203200 A165700

Adjacent sequences: A207149 A207150 A207151 * A207153 A207154 A207155

Keyword

nonn

Author

R. H. Hardin Feb 15 2012

Status

approved