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1, 1, 4, 9, 26, 64, 183, 465, 1282, 3406, 9285, 25044, 68511, 186565, 511559, 1402689, 3858355, 10623592, 29311035, 80957054, 223924131, 619998655, 1718508780, 4767643956, 13238487101, 36788341279, 102306350929, 284699560049, 792766449887, 2208805757329, 6157550533161
(列表;图表;参考;听;历史;文本;内部格式)
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