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1, 3, 7, 15, 37, 85, 199, 467, 1089, 2549, 5959, 13931, 32577, 76165, 178087, 416395, 973585, 2276389, 5322519, 12444811, 29097761, 68034725, 159074951, 371940043, 869649137, 2033364389, 4754297463, 11116229131, 25991337537, 60771473701
(列表;图表;参考;听;历史;文本;内部格式)
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