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1, 3, 7, 15, 31, 61, 121, 241, 481, 961, 1921, 3839, 7671, 15327, 30623, 61185, 122249, 244257, 488033, 975105, 1948289, 3892739, 7777807, 15540287, 31049951, 62038717, 123955185, 247666113, 494844193, 988713281, 1975478273, 3947063807
(列表;图表;参考;听;历史;文本;内部格式)
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