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1, 6, 26, 110, 450, 1822, 7330, 29406, 117794, 471518, 1886754, 7548382, 30196258, 120790494, 483172898, 1932713438, 7730897442, 30923677150, 123694883362, 494779882974, 1979120230946, 7916482321886, 31665932083746, 126663733927390, 506654946894370, 2026619809947102, 8106479284527650, 32425917227589086
(列表;图表;参考;听;历史;文本;内部格式)
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