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1, 10, 91, 645, 4476, 28417, 178034, 1080695, 6528155, 38917937, 232238686, 1381225056, 8249156391, 49357075136, 297073535723, 1796516932769, 10940218266069, 67044447244408, 413978915930318, 2574481278442121, 16135717834519172, 101892475282815648
(列表;图表;参考;听;历史;文本;内部格式)
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