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1, 3, 9, 32, 147, 844, 5765, 45366, 403207, 3991688, 43545609, 518918410, 6706022411, 93405312012, 1394852659213, 22230464256014, 376610217984015, 6758061133824016, 128047474114560017, 2554547108585472018, 53523844179886080019, 1175091669949317120020
(列表;图表;参考;听;历史;文本;内部格式)
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