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0, 0, 1, 3, 9, 19, 45, 93, 197, 405, 837, 1697, 3465, 7011, 14193, 28653, 57825, 116471, 234549, 471801, 948697, 1906407, 3829581, 7689357, 15435033, 30973005, 62137797, 124630149, 249922665, 501078345, 1004468157, 2013263853, 4034666121, 8084640465
(列表;图表;参考;听;历史;文本;内部格式)
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