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0, 0, 0, 1, 5, 19, 82, 324, 1328, 5367, 21809, 88463, 359056, 1457052, 5913112, 23996513, 97382945, 395199883, 1603802802, 6508562056, 26413086624, 107189749111, 434998095205, 1765311927087, 7163999648656, 29072987143064, 117984174051328, 478804095978481, 1943085707636701, 7885442290344115
(列表;图表;参考;听;历史;文本;内部格式)
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