A197942 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 3,0,1,1,0,0,0 for x=0,1,2,3,4,5,6

1, 4, 13, 76, 892, 14242, 383578, 17508639, 1352973126

Offset

1,2

Comments

Every 0 is next to 0 3's, every 1 is next to 1 0's, every 2 is next to 2 1's, every 3 is next to 3 1's, every 4 is next to 4 0'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..............0..............0..............0
.......0.0............0.0............1.1............0.0............0.0
......0.5.0..........0.6.0..........2.1.3..........0.6.0..........0.5.0
.....4.0.2.1........0.0.0.0........0.0.2.1........0.0.0.0........0.0.2.1
....0.0.0.1.3......0.4.0.5.0......0.6.0.0.1......2.0.5.0.0......0.0.4.1.3
...0.6.0.4.2.1....0.2.1.2.0.0....0.0.0.5.2.1....1.1.2.0.4.0....0.6.0.0.1.2
..0.0.0.0.0.0.1..0.0.1.3.1.2.1..0.0.4.0.0.0.1..0.1.3.1.1.1.1..0.0.0.0.2.1.0

Crossrefs

Sequence in context: A362572 A012261 A012075 * A337286 A140417 A301396

Adjacent sequences: A197939 A197940 A197941 * A197943 A197944 A197945

Keyword

nonn

Author

R. H. Hardin Oct 19 2011

Status

approved