A217243 Number of triangular nXnXn arrays of occupancy after each element moves to some neighbor and with no occupancy greater than 5.

0, 7, 182, 22694, 10463914, 18677504990

Offset

1,2

Comments

Column 5 of A217245

Links

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

Example

Some solutions for n=4
.....0........2........2........0........1........0........0........0
....0.4......1.1......1.0......3.1......1.1......1.1......1.2......4.1
...2.1.1....1.1.0....2.2.1....0.1.1....1.3.0....0.5.0....0.1.1....1.1.0
..0.1.1.0..2.0.2.0..0.1.0.1..1.2.1.0..1.1.1.0..1.1.1.0..0.3.1.1..0.1.1.1

Crossrefs

Sequence in context: A059382 A158620 A217242 * A217244 A152436 A176338

Adjacent sequences: A217240 A217241 A217242 * A217244 A217245 A217246

Keyword

nonn,hard,more

Author

R. H. Hardin Sep 28 2012

Status

approved