A197912 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 5,0,2,1,0,2,2 for x=0,1,2,3,4,5,6

1, 5, 17, 110, 1383, 28772, 979472, 57250646, 5612977959

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 2's, every 3 is next to 3 1's, every 4 is next to 4 0's, every 5 is next to 5 2's, every 6 is next to 6 2's

Links

Table of n, a(n) for n=1..9.

Example

Some solutions with all values from 0 to 6 for 8X8X8
.........0................0................0................0
........2.2..............2.2..............2.2..............4.0
.......2.5.2............2.5.2............2.5.2............0.0.4
......1.2.5.2..........2.5.2.0..........2.5.2.0..........0.4.0.0
.....1.0.2.2.0........0.2.2.0.0........0.2.2.1.1........1.3.1.2.2
....2.2.1.1.4.0......0.0.1.1.2.2......0.0.1.3.2.2......2.2.1.2.5.2
...2.6.2.3.0.0.4....0.0.4.3.2.6.2....2.0.4.1.2.6.2....2.6.2.0.2.5.2
..0.2.2.1.0.0.0.0..0.4.0.0.1.2.2.0..2.2.0.0.1.2.2.0..0.2.2.0.0.2.2.0

Crossrefs

Sequence in context: A062586 A301641 A067710 * A203114 A198027 A216924

Adjacent sequences: A197909 A197910 A197911 * A197913 A197914 A197915

Keyword

nonn

Author

R. H. Hardin Oct 19 2011

Status

approved