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1, 1, 1, 1, 1, 2, 12, 72, 352, 1472, 5756, 26336, 180116, 1577006, 13720566, 109776526, 829240726, 6488348726, 59134377126, 640605185526, 7502207070150, 87309498759810, 989782736128170, 11277397727184650, 136523328121058170, 1817775858886701082
(列表;图表;参考文献;听;历史;文本;内部格式)
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