A197867 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,4,0,2,1,0,2 for x=0,1,2,3,4,5,6

1, 4, 12, 48, 461, 6832, 158136, 5845234, 360941736

Offset

1,2

Comments

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

Links

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

Example

Some solutions with all values from 0 to 6 for 8X8X8
.........0................0................0................2
........0.0..............0.0..............0.0..............0.0
.......0.5.2............2.5.0............0.5.2............0.5.2
......0.0.0.2..........2.0.0.0..........0.0.0.3..........0.0.0.2
.....2.2.2.3.0........0.3.2.2.2........2.2.2.2.2........2.2.2.3.0
....0.2.6.2.0.2......1.0.2.6.2.0......0.2.6.2.0.0......0.2.6.2.0.1
...0.0.2.2.0.1.1....4.1.0.2.2.0.0....0.0.2.2.0.1.1....0.0.2.2.0.1.4
..2.0.0.2.0.1.4.1..1.1.2.0.2.0.0.0..0.0.0.2.0.1.4.1..0.0.0.2.0.2.1.1

Crossrefs

Sequence in context: A324801 A111930 A335595 * A013935 A149386 A149387

Adjacent sequences: A197864 A197865 A197866 * A197868 A197869 A197870

Keyword

nonn

Author

R. H. Hardin Oct 18 2011

Status

approved