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1, 2, 3, 8, 18, 42, 97, 225, 521, 1207, 2796, 6477, 15004, 34757, 80515, 186514, 432062, 1000877, 2318544, 5370936, 12441840, 28821677, 66765773, 154663743, 358280483, 829961192, 1922615417, 4453762510, 10317196211, 23899913257, 55364446116, 128252427562, 297098342519, 688232003132
(列表;图表;参考文献;听;历史;文本;内部格式)
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