A197852 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 6,6,0,0,1,1,1 for x=0,1,2,3,4,5,6

1, 4, 12, 81, 893, 15724, 461526, 21160235, 1588993194, 193123531704, 38467394450377

Offset

1,2

Comments

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

Links

Table of n, a(n) for n=1..11.

Example

Some solutions with all values from 0 to 6 for 8X8X8
.........0................0................0................2
........1.1..............1.1..............1.1..............0.0
.......1.6.1............1.6.1............1.6.1............0.1.1
......4.1.1.0..........4.1.1.0..........0.1.1.4..........3.1.6.1
.....1.1.5.0.3........1.1.5.2.0........3.0.5.1.1........0.0.1.1.0
....1.6.1.1.1.0......1.6.1.1.1.0......0.1.1.1.6.1......1.1.5.1.1.2
...0.1.1.1.6.1.0....0.1.1.1.6.1.0....3.1.6.1.1.1.2....1.6.1.1.6.1.0
..2.0.0.0.1.1.2.0..0.3.0.0.1.1.2.0..0.0.1.1.0.2.0.0..0.1.1.4.1.1.0.2

Crossrefs

Sequence in context: A299795 A351736 A010370 * A362384 A305334 A205337

Adjacent sequences: A197849 A197850 A197851 * A197853 A197854 A197855

Keyword

nonn

Author

R. H. Hardin Oct 18 2011

Status

approved