A197787 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 6,6,1,0,0,0,1 for x=0,1,2,3,4,5,6

1, 1, 7, 64, 859, 25741, 1390506, 144068133, 28038811204, 10322783689890, 7158209339360946

Offset

1,3

Comments

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

Links

Table of n, a(n) for n=1..11.

Example

Some solutions with all values from 0 to 6 for 6X6X6
.......0............0............2............0............2............0
......0.0..........3.0..........1.1..........1.1..........1.1..........0.3
.....0.5.0........0.4.0........1.6.1........1.6.1........1.6.1........0.4.0
....1.1.0.3......0.0.1.1......0.1.1.0......0.1.1.2......0.1.1.0......1.1.0.0
...1.6.1.4.0....0.5.1.6.1....0.5.0.4.3....0.5.0.0.3....0.4.0.5.0....1.6.1.5.0
..2.1.1.0.0.0..0.0.0.1.1.2..0.0.0.0.0.0..0.0.0.4.0.0..0.3.0.0.0.0..2.1.1.0.0.0

Crossrefs

Sequence in context: A360465 A252654 A352841 * A024095 A274823 A174508

Adjacent sequences: A197784 A197785 A197786 * A197788 A197789 A197790

Keyword

nonn

Author

R. H. Hardin Oct 18 2011

Status

approved