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1, 6, 28, 140, 270, 672, 2970, 8190, 30240, 332640, 2178540, 2457000, 11981970, 14303520, 17428320, 27027000, 163390500, 164989440, 191711520, 513513000, 1307124000, 2144862720, 2701389600, 3506025600, 5943057120, 13584130560, 14378364000, 29715285600, 45578332800
(列表;图表;参考;听;历史;文本;内部格式)
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