A197859 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 3,3,0,1,2,2,0 for x=0,1,2,3,4,5,6

1, 4, 9, 59, 315, 3613, 44435, 897011, 26043505, 1091940422

Offset

1,2

Comments

Every 0 is next to 0 3's, every 1 is next to 1 3's, every 2 is next to 2 0's, every 3 is next to 3 1'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 8X8X8
.........0................2................0................0
........0.0..............0.0..............0.0..............0.0
.......2.0.0............0.6.0............0.6.0............2.2.2
......2.2.2.2..........0.0.0.2..........0.0.0.2..........0.5.2.0
.....0.0.5.2.0........0.0.0.2.1........0.0.0.2.1........0.2.2.0.0
....1.0.2.2.0.0......2.2.2.4.3.1......2.2.2.4.1.3......0.2.4.0.6.0
...3.2.4.2.0.6.0....0.2.5.2.2.1.2....0.2.5.2.2.1.2....0.1.3.2.0.0.0
..1.1.0.2.0.0.0.0..2.0.2.0.0.0.0.0..2.0.2.0.0.0.0.0..2.0.1.1.2.0.0.0

Crossrefs

Sequence in context: A358446 A152284 A109717 * A197997 A309444 A198178

Adjacent sequences: A197856 A197857 A197858 * A197860 A197861 A197862

Keyword

nonn

Author

R. H. Hardin Oct 18 2011

Status

approved