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1, 9, 25, 49, 149, 625, 2141, 5433, 17269, 65249, 214877, 600025, 1934485, 6961153, 22488637, 66171721, 214994149, 746222545, 2392193165, 7273608601, 23705004725, 80233190113, 256613628509, 797094034921, 2598493640773, 8647653815601
(列表;图表;参考;听;历史;文本;内部格式)
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