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A155306
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Number of ways to place zero or more nonadjacent 1,0 2,0 3,1 3,2 4,3 4,4 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 7, 25, 55, 208, 1168, 8750, 74240, 701683, 8051955, 120548805, 2289918377, 52736906771
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