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0, 0, 2, 6, 26, 130, 782, 5474, 43794, 394146, 3941462, 43356082, 520272986, 6763548818, 94689683454, 1420345251810, 22725524028962, 386333908492354, 6954010352862374, 132126196704385106, 2642523934087702122, 55493002615841744562, 1220846057548518380366
(列表;图表;参考;听;历史;文本;内部格式)
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