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9, 27, 81, 237, 651, 1647, 3834, 8272, 16698, 31824, 57720, 100296, 167898, 272034, 428247, 657153, 985663, 1448409, 2089395, 2963895, 4140621, 5704185, 7757880, 10426806, 13861368, 18241174, 23779362, 30727386, 39380292, 50082516, 63234237
(列表;图表;参考;听;历史;文本;内部格式)
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