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1, 3, 9, 21, 57, 121, 305, 657, 1505, 3233, 7489, 15169, 34433, 72833, 156929, 325889, 717313, 1462785, 3187713, 6538241, 13846529, 28739585, 61673473, 124063745, 263856129, 544481281, 1139032065, 2326282241, 4920999937, 9924804609, 20923351041, 42635165697
(列表;图表;参考;听;历史;文本;内部格式)
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