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1, 1, 4, 22, 149, 1169, 10272, 99012, 1032346, 11526094, 136755650, 1714031312, 22584475206, 311597054110, 4486616619986, 67227958200996, 1045724188868353, 16849477086762701, 280694278424099214, 4826423610068933738, 85527389275821664161, 1559842051063534891301
(列表;图表;参考;听;历史;文本;内部格式)
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