A193184 Number of nXnXn triangular 0..4 arrays with no element equal to the sum mod 5 of any two neighbors

5, 64, 320, 5000, 191008, 14760960, 2327810048, 744138184192, 482125942079488, 633412084252934144, 1687400357268217397248, 9114708361014996399816704, 99830224938625064018120802304

Offset

1,1

Links

Table of n, a(n) for n=1..13.

Example

Some solutions for 4X4X4
.....2........3........4........2........4........3........2........3
....2.3......3.2......4.4......2.2......1.1......2.3......4.4......2.2
...3.2.3....3.2.3....4.4.4....2.3.3....1.1.4....2.2.2....1.1.1....2.2.2
..4.3.2.3..4.3.3.4..4.4.1.4..2.3.2.2..1.4.4.2..3.2.2.3..3.1.4.1..3.3.2.1

Crossrefs

Sequence in context: A193326 A193834 A193875 * A180787 A222455 A351855

Adjacent sequences: A193181 A193182 A193183 * A193185 A193186 A193187

Keyword

nonn

Author

R. H. Hardin Jul 17 2011

Status

approved