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A155309
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 4,2 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 7, 19, 52, 196, 938, 5406, 33082, 270615, 2652565, 30092725, 403696211, 6603268906
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