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0, 3, 21, 102, 426, 1641, 6015, 21324, 73812, 250959, 841449, 2790066, 9167358, 29893557, 96855123, 312088728, 1000836264, 3196219035, 10169787837, 32252755710, 101988443730, 321655860993, 1012039172391, 3177332285412, 9955641160956, 31137856397031
(列表;图表;参考;听;历史;文本;内部格式)
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