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A217509
Number of triangular nXnXn arrays of occupancy after each element either stays or moves to some neighbor and with no occupancy greater than 7
0
1, 10, 351, 47545, 25051603, 51281768138
OFFSET
1,2
COMMENTS
Column 7 of A217510
EXAMPLE
Some solutions for n=4
.....0........0........1........2........0........2........2........1
....1.0......0.4......1.0......1.0......0.2......0.0......2.2......0.2
...0.7.0....0.1.2....1.5.0....2.2.0....2.0.1....2.3.0....1.0.0....1.2.0
..0.1.0.1..1.0.2.0..1.0.0.1..0.0.3.0..1.1.0.3..0.0.3.0..0.2.0.1..1.0.0.3
CROSSREFS
Sequence in context: A339411 A217507 A217508 * A016101 A249847 A185255
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 05 2012
STATUS
approved