A197786 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 6,6,0,0,0,0,1 for x=0,1,2,3,4,5,6

1, 4, 18, 209, 4988, 221443, 19332957, 3266183233, 1068404830615, 677798120112881, 833288676199771911

Offset

1,2

Comments

Every 0 is next to 0 6's, every 1 is next to 1 6's, every 2 is next to 2 0'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............0............0............2............2
......0.3..........1.1..........1.1..........0.0..........0.0..........0.0
.....0.4.0........1.6.1........1.6.1........0.5.0........0.5.0........0.5.0
....1.1.0.0......0.1.1.0......0.1.1.0......1.1.0.3......0.0.1.1......3.0.1.1
...1.6.1.5.0....0.4.0.5.0....0.4.0.5.0....1.6.1.4.0....3.4.1.6.1....0.4.1.6.1
..0.1.1.0.0.2..2.0.3.0.0.0..2.0.3.0.0.2..0.1.1.0.0.2..0.0.0.1.1.0..0.0.0.1.1.0

Crossrefs

Sequence in context: A201346 A174663 A356561 * A242083 A327335 A275965

Adjacent sequences: A197783 A197784 A197785 * A197787 A197788 A197789

Keyword

nonn

Author

R. H. Hardin Oct 18 2011

Status

approved