A197995 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,1,0,2,2,0,0 for x=0,1,2,3,4,5,6

1, 7, 33, 379, 9716, 421819, 36368907, 6006706283, 1878638750552

Offset

1,2

Comments

Every 0 is next to 0 4's, every 1 is next to 1 1's, every 2 is next to 2 0's, every 3 is next to 3 2's, every 4 is next to 4 2'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..9.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........0..............0..............1..............2..............0
.......2.0............0.0............0.1............0.0............0.0
......4.2.0..........0.6.0..........1.0.0..........0.1.1..........2.0.2
.....2.2.3.2........2.0.0.0........1.2.5.0........0.5.0.2........2.3.2.4
....0.0.0.0.1......4.2.0.5.0......0.3.0.0.0......0.0.0.3.0......0.0.0.2.2
...1.5.0.6.0.1....2.2.3.2.0.0....0.2.2.0.6.0....0.6.0.2.2.0....0.6.0.5.0.0
..1.0.0.0.0.0.0..0.0.0.1.1.0.2..0.2.4.2.0.0.0..0.0.0.2.4.2.0..2.0.0.0.0.1.1

Crossrefs

Sequence in context: A333565 A215125 A204706 * A207150 A197565 A202762

Adjacent sequences: A197992 A197993 A197994 * A197996 A197997 A197998

Keyword

nonn

Author

R. H. Hardin Oct 20 2011

Status

approved