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1, 1, 1, 1, 1, 2, 2, 5, 9, 12, 28, 52, 101, 210, 478, 1013, 1899, 4175, 8441, 17794, 36273, 74831, 153258, 314354, 630669, 1275787, 2563582, 5137717, 10176417, 20206831, 39762000, 78252739, 152625032, 297479773, 576578998, 1114993712, 2142088060
(列表;图表;参考;听;历史;文本;内部格式)
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