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A048070
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Number of nonempty subsets of {1,2,...,n} in which exactly 5/6 of the elements are <= (n-4)/2.
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0
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 10, 60, 66, 231, 252, 672, 728, 1638, 1764, 3619, 3885, 8085, 8712, 20592, 22440, 60775, 66924, 189189, 209209
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