A203212 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 3,2,0,2,2,2,0 for x=0,1,2,3,4,5,6

1, 4, 33, 263, 4775, 128981, 5306951, 387751453, 43916084516, 8188708881446

Offset

1,2

Comments

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

Links

Table of n, a(n) for n=1..10.

Example

Some solutions with all values from 0 to 6 for 7X7X7
........0..............1..............1..............2..............0
.......0.1............2.0............0.2............0.0............2.0
......2.2.0..........0.2.2..........2.2.0..........0.6.0..........3.2.0
.....0.5.2.1........1.2.5.0........0.5.2.1........1.0.0.2........2.4.2.0
....0.2.2.0.0......0.0.2.2.0......0.2.2.0.0......0.2.2.4.3......0.0.2.5.2
...0.2.4.0.6.0....0.6.0.4.2.0....0.2.4.0.6.0....1.2.5.2.2.2....0.6.0.2.2.0
..0.2.3.2.0.0.2..2.0.0.2.3.2.0..0.2.3.2.0.0.0..0.0.2.0.0.0.0..0.0.0.1.0.1.0

Crossrefs

Sequence in context: A221030 A081007 A213168 * A041024 A088317 A257068

Adjacent sequences: A203209 A203210 A203211 * A203213 A203214 A203215

Keyword

nonn

Author

R. H. Hardin Dec 30 2011

Status

approved