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0, 1, 5, 35, 310, 2980, 30526, 325655, 3581200, 40301850, 461925625, 5373527605, 63281397830, 752962948360, 9038406399150, 109321688626100, 1331047556550240, 16300720361555725, 200658900798443135, 2481460407963908510, 30814094488256704650, 384069865485447909905
(列表;图表;参考;听;历史;文本;内部格式)
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