A192889 Number of nXnXn triangular 0..3 arrays with each element equal to at least two neighbors, containing at least one 3 and with new values 0..3 introduced in row major order

0, 0, 0, 0, 4, 2268, 337010, 115040855, 73195505386

Offset

1,5

Links

Table of n, a(n) for n=1..9.

Example

All solutions for 5X5X5
......0..........0..........0..........0
.....0.0........0.0........0.0........0.0
....0.0.0......1.1.1......1.2.2......1.1.2
...1.2.2.3....2.1.1.3....1.1.2.3....3.1.2.2
..1.1.2.3.3..2.2.1.3.3..1.1.1.3.3..3.3.2.2.2

Crossrefs

Sequence in context: A012869 A172941 A180993 * A062407 A212799 A343695

Adjacent sequences: A192886 A192887 A192888 * A192890 A192891 A192892

Keyword

nonn

Author

R. H. Hardin Jul 11 2011

Status

approved