A193834 Number of nXnXn triangular 0..4 arrays with no element equal to the sum or difference mod 5 of any two of its neighbors

5, 64, 152, 2344, 74128, 4727488, 605830476, 155327728048, 79651829978204, 81691885047878064, 167569176063020514888, 687449894100567335441484, 5640526291619821099568894356, 92561388544166458974009202568900

Offset

1,1

Links

Table of n, a(n) for n=1..14.

Example

Some solutions for 4X4X4
.....1........2........2........2........3........1........3........3
....1.4......2.3......3.2......2.2......3.3......4.1......2.3......2.3
...4.4.1....3.3.3....3.3.2....3.3.3....3.3.2....1.4.1....2.3.3....2.2.2
..1.4.4.4..2.3.3.2..2.3.3.2..2.3.3.2..3.2.3.3..1.4.4.1..2.2.2.2..2.2.2.2

Crossrefs

Sequence in context: A275763 A004193 A193326 * A193875 A193184 A180787

Adjacent sequences: A193831 A193832 A193833 * A193835 A193836 A193837

Keyword

nonn

Author

R. H. Hardin Aug 06 2011

Status

approved