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1, 10, 65, 320, 1320, 4762, 15500, 46410, 129710, 341990, 857695, 2059430, 4759235, 10630810, 23034880, 48562378, 99866045, 200766810, 395317950, 763661010, 1449390299, 2706189810, 4976391015, 9021860260, 16139848000, 28515535112, 49792637480, 85989053350
(列表;图表;参考;听;历史;文本;内部格式)
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