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3, 2, 12, 24, 70, 192, 633, 2484, 10554, 35054, 102520, 337948, 1366804, 6000028, 24951622, 94266262, 337342046, 1263530794, 5269371063, 23209051416, 98571237345, 383041820280, 1353435250769, 4542413798878, 16490190511798, 76615460665948, 434914649543770
(列表;图表;参考;听;历史;文本;内部格式)
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