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A155435
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Number of ways to place zero or more nonadjacent 2,1 2,2 3,0 3,1 3,3 4,2 4,3 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 4, 13, 28, 49, 105, 852, 6079, 29814, 128372, 780418, 9582912, 132900511, 1524452541, 17253579386, 257451880786, 5763064779401, 154341468962518
(list; graph; refs; listen; history; internal format)
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