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0, 1, 3, 7, 17, 37, 77, 158, 314, 611, 1174, 2222, 4156, 7703, 14149, 25790, 46703, 84059, 150476, 268076, 475460, 839873, 1478140, 2592620, 4533157, 7903261, 13741783, 23833789, 41241117, 71206561, 122693568, 211003818, 362221854
(列表;图表;参考;听;历史;文本;内部格式)
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