A197999 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 6,0,1,0,0,1,1 for x=0,1,2,3,4,5,6

1, 4, 22, 216, 3947, 122529, 6627405, 625861278, 105953231415

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

Example

Some solutions with all values from 0 to 6 for 7X7X7
........0..............0..............0..............1..............1
.......1.1............0.4............2.0............1.0............0.1
......1.6.1..........3.0.0..........1.1.1..........1.1.1..........1.5.1
.....0.1.1.0........0.2.0.2........0.5.1.2........0.5.1.2........2.1.1.0
....0.4.1.1.1......1.1.1.1.1......1.1.1.0.0......1.1.1.0.0......0.0.1.1.1
...3.0.0.1.5.1....1.6.1.5.1.0....1.6.1.4.0.3....1.6.1.3.4.3....0.4.3.1.6.1
..1.0.0.2.1.0.1..0.1.1.0.1.2.0..0.1.1.0.0.3.0..0.1.1.0.0.0.0..0.3.0.0.1.1.0

Crossrefs

Sequence in context: A356285 A120482 A207156 * A197963 A260296 A302769

Adjacent sequences: A197996 A197997 A197998 * A198000 A198001 A198002

Keyword

nonn

Author

R. H. Hardin Oct 20 2011

Status

approved