A193878 Number of nXnXn triangular 0..7 arrays with no element equal to the difference mod 8 of any two of its neighbors

8, 364, 15391, 2002035, 1435357131, 5135093341467

Offset

1,1

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for 4X4X4
.....2........4........3........2........4........3........2........3
....3.2......1.4......2.2......3.3......3.3......2.2......3.2......3.3
...2.3.2....1.1.1....2.2.2....3.2.2....3.3.4....2.2.2....3.3.2....2.2.3
..3.2.2.2..1.1.1.4..3.3.3.3..2.3.2.3..2.3.3.3..2.2.3.2..2.2.2.2..3.3.2.2

Crossrefs

Sequence in context: A277656 A264198 A193837 * A193187 A240380 A038016

Adjacent sequences: A193875 A193876 A193877 * A193879 A193880 A193881

Keyword

nonn

Author

R. H. Hardin Aug 07 2011

Status

approved