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A155289
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 7, 25, 55, 208, 1150, 9013, 76658, 703883, 8056303, 122331252, 2348850844, 54143239435
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