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A181323
Number of ways of placing n rods of length 3 in a 3x3x3 cubic lattice without any two rods intersecting (0 <= n <= 9).
1
1, 27, 270, 1278, 3078, 3888, 2592, 918, 189, 21
OFFSET
0,2
COMMENTS
This appears in relation to the degeneracy of the ground states of certain 3-dimensional lattice models in statistical physics.
CROSSREFS
Row n=3 of A185697.
Sequence in context: A126548 A108670 A136925 * A136926 A042412 A078876
KEYWORD
fini,full,nonn
AUTHOR
Marcos Simoes, Jan 27 2011
STATUS
approved