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0, 0, 0, 0, 1, 10, 55, 220, 715, 2003, 5025, 11650, 25850, 57475, 134883, 345090, 952195, 2722455, 7765010, 21615771, 58293475, 152593575, 390679925, 988851150, 2502813930, 6394182650, 16569837550, 43533891575, 115440190725, 307108317769, 815362167365
(列表;图表;参考文献;听;历史;文本;内部格式)
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