A193185 Number of nXnXn triangular 0..5 arrays with no element equal to the sum mod 6 of any two neighbors

6, 140, 2347, 109477, 21391089, 14299793331, 30535534087125, 199765892340671739

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Example

Some solutions for 4X4X4
.....5........3........3........1........5........5........3........5
....5.3......3.4......3.5......5.5......3.1......3.3......3.3......5.3
...5.3.2....3.3.2....5.5.3....5.5.3....1.1.5....1.5.3....5.5.5....3.1.5
..3.3.3.4..2.2.2.1..1.1.3.3..5.1.5.1..5.1.5.5..3.5.5.1..1.3.5.5..1.3.3.3

Crossrefs

Sequence in context: A123728 A193876 A293124 * A359647 A322625 A012785

Adjacent sequences: A193182 A193183 A193184 * A193186 A193187 A193188

Keyword

nonn

Author

R. H. Hardin Jul 17 2011

Status

approved