A217244 Number of triangular nXnXn arrays of occupancy after each element moves to some neighbor and with no occupancy greater than 6.

0, 7, 182, 22730, 10528984, 18932213525

Offset

1,2

Comments

Column 6 of A217245

Links

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

Example

Some solutions for n=4
.....0........1........2........0........1........0........2........2
....0.2......2.0......1.1......1.0......2.2......1.0......0.1......1.3
...0.6.0....1.2.0....0.0.2....2.3.0....1.0.1....2.1.0....0.1.0....2.0.0
..0.1.1.0..0.3.1.0..1.2.1.0..0.1.2.1..0.0.2.1..1.0.4.1..0.4.2.0..0.0.1.1

Crossrefs

Sequence in context: A158620 A217242 A217243 * A152436 A176338 A012843

Adjacent sequences: A217241 A217242 A217243 * A217245 A217246 A217247

Keyword

nonn,hard,more

Author

R. H. Hardin Sep 28 2012

Status

approved