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A105369
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Expansion of ((1+x)^3 - x^3)/((1+x)^5 - x^5).
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1
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1, -2, 3, -5, 10, -20, 35, -50, 50, 0, -175, 625, -1625, 3625, -7250, 13125, -21250, 29375, -29375, 0, 106250, -384375, 1006250, -2250000, 4500000, -8140625, 13171875, -18203125, 18203125, 0, -65859375, 238281250, -623828125, 1394921875, -2789843750, 5046875000, -8166015625
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