A217242 - OEIS

A217242

Number of triangular nXnXn arrays of occupancy after each element moves to some neighbor and with no occupancy greater than 4.

0, 7, 182, 22484, 10146841, 17541907856

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Column 4 of A217245

LINKS

EXAMPLE

Some solutions for n=4

.....1........2........0........0........0........0........0........0

....2.0......0.2......0.2......3.2......2.0......1.1......2.0......1.4

...3.1.0....1.0.0....0.1.4....1.1.0....3.0.1....2.0.0....1.4.0....1.0.1

..0.2.1.0..0.2.2.1..0.2.1.0..0.1.1.1..1.1.2.0..2.0.2.2..0.0.2.1..1.0.2.0

CROSSREFS

KEYWORD

nonn,hard,more

AUTHOR

STATUS

approved