A197656 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 5,0,0,1,2,2,0 for x=0,1,2,3,4,5,6

1, 7, 18, 125, 2161, 28094, 1080034, 65436084, 5087936600

Offset

1,2

Comments

Every 0 is next to 0 5's, every 1 is next to 1 0'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..9.

Example

Some solutions with all values 0 to 6 for 8X8X8
.........1................0................0................1
........0.2..............0.0..............3.1..............0.2
.......0.0.2............0.6.0............1.1.1............0.0.2
......2.2.2.0..........2.0.0.0..........1.0.2.0..........2.2.2.0
.....0.2.5.2.0........1.2.2.2.2........2.2.4.2.0........0.2.5.2.0
....0.0.2.4.2.1......1.0.4.5.2.0......0.0.2.5.2.2......0.0.2.4.2.1
...0.6.0.2.0.1.3....1.1.2.2.2.0.0....0.6.0.2.2.0.2....0.6.0.2.0.1.3
..0.0.0.2.1.3.1.0..0.3.1.0.0.2.2.1..0.0.0.0.2.0.0.1..2.0.0.2.1.3.1.0

Crossrefs

Sequence in context: A196220 A198031 A203118 * A205078 A198023 A202761

Adjacent sequences: A197653 A197654 A197655 * A197657 A197658 A197659

Keyword

nonn

Author

R. H. Hardin Oct 17 2011

Status

approved