A193370 Number of n X n X n triangular 0..5 arrays with no element equal to the product mod 6 of any two neighbors.

6, 161, 6960, 686499, 181876477, 131680333106, 290536092154255

Offset

1,1

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for 4 X 4 X 4
.....0........0........0........0........0........0........0........0
....1.4......4.1......5.4......5.3......3.1......2.5......1.1......1.1
...3.1.2....0.5.3....0.4.5....3.4.5....2.5.2....2.0.2....0.3.5....2.0.2
..2.4.0.1..1.1.2.1..1.5.0.1..5.4.3.4..2.2.3.1..5.2.2.2..1.1.4.0..1.5.1.0

Crossrefs

Sequence in context: A364370 A120277 A241453 * A332116 A015086 A052466

Adjacent sequences: A193367 A193368 A193369 * A193371 A193372 A193373

Keyword

nonn

Author

R. H. Hardin, Jul 24 2011

Status

approved