A203217 Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,5,2,0,1,1,2 for x=0,1,2,3,4,5,6

1, 2, 8, 59, 731, 15277, 617467, 42956004, 5260670473, 1155997481999

Offset

1,2

Comments

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

Links

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

Example

Some solutions with all values from 0 to 6 for 7X7X7
........0..............0..............0..............0..............0
.......2.2............0.3............1.1............3.0............1.0
......2.6.2..........2.2.0..........1.5.1..........0.2.2..........1.5.1
.....0.2.2.0........2.6.2.0........4.1.2.2........0.2.6.2........0.1.1.4
....1.1.1.1.0......1.2.2.0.1......1.1.2.6.2......0.1.2.2.1......0.2.2.1.1
...1.5.4.5.1.3....1.5.1.1.5.1....1.5.0.2.2.0....1.5.1.1.5.1....3.2.6.2.5.1
..0.1.1.1.1.0.0..0.1.1.4.1.1.0..0.1.1.0.0.3.0..0.1.1.4.1.1.0..0.0.2.2.1.1.0

Crossrefs

Sequence in context: A205079 A202760 A205075 * A203208 A181010 A197941

Adjacent sequences: A203214 A203215 A203216 * A203218 A203219 A203220

Keyword

nonn

Author

R. H. Hardin Dec 30 2011

Status

approved