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A155222
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Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,0 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 13, 37, 184, 1433, 15532, 213600, 3754855, 93144364, 3159998575, 143228568126, 8737142545792, 720729233703571
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