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1, 1, 7, 19, 91, 331, 1387, 5419, 21931, 87211, 349867, 1397419, 5593771, 22366891, 89483947, 357903019, 1431677611, 5726579371, 22906579627, 91625794219, 366504225451, 1466014804651, 5864063412907, 23456245263019, 93824997829291, 375299957762731
(列表;图表;参考;听;历史;文本;内部格式)
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