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1, 15, 120, 695, 3285, 13473, 49730, 169115, 538440, 1623660, 4677121, 12955065, 34682730, 90113220, 227992870, 563267203, 1361992935, 3229643480, 7522847555, 17237982025, 38905739524, 86585024910, 190193593830, 412712252535, 885382820550, 1879084411753
(列表;图表;参考;听;历史;文本;内部格式)
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