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A155305
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Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 3,2 3,3 4,4 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 7, 25, 64, 217, 1298, 10738, 90390, 827265, 9950319, 159818687, 3209355205, 75527888278, 2156343784054
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