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2, 6, 13, 28, 56, 108, 204, 376, 685, 1230, 2190, 3864, 6774, 11802, 20461, 35312, 60708, 104004, 177632, 302540, 513997, 871266, 1473818, 2488368, 4194026, 7057518, 11858509, 19898116, 33345680, 55814940, 93320820, 155867104
(列表;图表;参考文献;听;历史;文本;内部格式)
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