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A032221
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Number of ways to partition n labeled elements into pie slices of different sizes of at least 2, allowing the pie to be turned over.
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0
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0, 1, 1, 1, 11, 16, 57, 85, 1507, 2896, 12563, 51074, 138789, 7999447, 20571904, 108097917, 509724227, 3208109968, 10079065623, 1222567789870, 3713826929467, 23585723568309, 124658237924300
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