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0, 4, 6, 14, 26, 54, 104, 210, 412, 832, 1654, 3330, 6670, 13452, 27004, 54414, 109400, 220264, 442938, 891256, 1791894, 3603128, 7241452, 14552628, 29234478, 58720290, 117911510, 236729446, 475169660, 953616548, 1913446072, 3838773120, 7700145556, 15443494464, 30969376788, 62096345834, 124493833506
(列表;图表;参考;听;历史;文本;内部格式)
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