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1, 1, 4, 7, 34, 73, 349, 817, 4042, 10069, 49507, 127873, 636262, 1693573, 8402032, 22820875, 113817454, 314673517, 1566987739, 4389038017, 21914474266, 62104354621, 309818244166, 886054108339, 4426647223768, 12765629703193, 63743452057729, 185072828494417, 924906132097252, 2702137210824097
(列表;图表;参考;听;历史;文本;内部格式)
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