A197796 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 6,0,0,0,0,2,1 for x=0,1,2,3,4,5,6

1, 7, 45, 630, 16377, 793262, 73405633, 12833817343, 4231690321114, 2639675473285623

Offset

1,2

Comments

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

Links

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

Example

Some solutions with all values from 0 to 6 for 8X8X8
.........0................0................0................1
........1.1..............1.1..............1.1..............2.0
.......1.6.1............1.6.1............1.6.1............0.2.2
......0.1.1.0..........0.1.1.0..........0.1.1.0..........3.2.5.0
.....0.2.1.3.0........2.3.1.2.0........0.2.1.3.0........0.0.2.2.0
....2.5.2.0.4.0......2.0.0.2.5.2......2.5.2.0.4.0......3.4.0.1.1.1
...0.2.2.0.4.0.0....0.4.0.0.2.2.0....0.2.2.0.4.0.0....0.0.3.2.1.6.1
..2.0.2.0.3.0.4.0..0.3.0.4.0.2.0.0..0.3.0.2.2.0.0.2..0.0.0.2.0.1.1.0

Crossrefs

Sequence in context: A370253 A337553 A006680 * A197856 A205080 A232789

Adjacent sequences: A197793 A197794 A197795 * A197797 A197798 A197799

Keyword

nonn

Author

R. H. Hardin Oct 18 2011

Status

approved