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A155337
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 4,2 4,3 4,4 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 4, 10, 22, 40, 161, 562, 3058, 15699, 98124, 620233, 5239100, 48386446, 558536676, 7037622489, 106784846181
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