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1, 5, 31, 141, 659, 3005, 13739, 62669, 285931, 1304285, 5949691, 27139821, 123799979, 564720125, 2576001179, 11750565389, 53600825611, 244502996765, 1115313334651, 5087560678701, 23207176728299, 105860762282045, 482889457961819, 2202725765240909
(列表;图表;参考;听;历史;文本;内部格式)
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