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A048060
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Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= (n-4)/2.
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0
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0, 0, 0, 0, 0, 5, 6, 27, 35, 119, 164, 494, 714, 2001, 3002, 8007, 12375, 31823, 50387, 125969, 203489, 497419, 817189, 1961255, 3268759, 7726159, 13037894, 30421754, 51895934, 119759849, 206253074, 471435599, 818809199
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