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A155327
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Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 3,2 4,2 5,3 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 7, 19, 37, 76, 382, 2724, 16177, 82034, 576215, 5993574, 76883371, 996696560, 14175824222, 255455613029
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