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0, 0, 1, 1, 4, 6, 12, 23, 42, 76, 143, 262, 496, 938, 1783, 3397, 6515, 12523, 24152, 46711, 90543, 175867, 342161, 666712, 1300805, 2541033, 4969255, 9727606, 19059560, 37374839, 73347038, 144042897, 283064780, 556601613, 1095087697
(列表;图表;参考;听;历史;文本;内部格式)
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