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5, 21, 88, 368, 1538, 6427, 26857, 112229, 468978, 1959746, 8189306, 34221135, 143001871, 597570335, 2497102330, 10434788478, 43604464772, 182212543365, 761422279419, 3181800093939, 13295975323332, 55560674643076, 232174661258332, 970201922073653, 4054239874815929, 16941690784755705, 70795240417122019
(列表;图表;参考;听;历史;文本;内部格式)
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