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1, 3, 14, 132, 691, 1908, 16579, 47352, 414301, 1183713, 5474669, 27151397, 135646011, 678174568, 6442602909, 18480090517, 85533990571, 424236721848, 4026815626549, 11550150977337, 53458791308981, 265147974756053, 1324666882885839, 6622797918981982, 62916043734881616, 329481245744393933
(列表;图表;参考;听;历史;文本;内部格式)
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