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A078707
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Number of vectors of length n that are symmetric about the middle, where each element is drawn from a set of n distinct elements.
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1, 2, 9, 16, 125, 216, 2401, 4096, 59049, 100000, 1771561, 2985984, 62748517, 105413504, 2562890625, 4294967296, 118587876497, 198359290368, 6131066257801, 10240000000000, 350277500542221, 584318301411328
(list; graph; refs; listen; history; internal format)
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