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A155219
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 polyhexes in any orientation on a planar nXnXn triangular grid.
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1
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1, 4, 10, 45, 176, 1305, 10079, 117352, 1561149, 29980210, 704867467, 22571926686, 912535595499, 49246939684046, 3416075823339525, 312263317852780140
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