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1, 6, 56, 336, 1840, 7925, 29183, 91621, 256546, 648697, 1508107, 3267671, 6679409, 12957976, 24015317, 42810244, 73793984, 123240964, 200260099, 317487746, 492199068, 747720800, 1115115145, 1634875673, 2360312092, 3358519981, 4716186332, 6541418450
(列表;图表;参考;听;历史;文本;内部格式)
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