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1, 3, 13, 55, 261, 1187, 5759, 27095, 132851, 636321, 3138695, 15198591, 75244035, 367002649, 1821354023, 8928746157, 44386359817, 218398906669, 1087022393723, 5363502194651, 26719537224443, 132121408334717, 658645331299475, 3262367647508843, 16272035433424649, 80707631696295535
(列表;图表;参考文献;听;历史;文本;内部格式)
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