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1, 5, 31, 160, 706, 2716, 9331, 28981, 82771, 219806, 548068, 1293146, 2906218, 6254416, 12948238, 25885894, 50139094, 94358704, 172962834, 309473934, 541528218, 928266020, 1561085648, 2579068700, 4190837573, 6705148385, 10573260725, 16446987970, 25257491270
(列表;图表;参考;听;历史;文本;内部格式)
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