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1, 3, 6, 21, 35, 126, 273, 987, 1598, 5781, 12549, 45402, 76657, 277347, 602070, 2178309, 3524579, 12752046, 27682401, 100155867, 169104754, 611826747, 1328165979, 4805349654, 7782268225, 28156510947, 61122728166, 221144107989
(列表;图表;参考;听;历史;文本;内部格式)
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