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1, 1, 2, 4, 10, 26, 81, 244, 819, 2695, 9463, 32922, 120808, 437836, 1659640, 6217694, 24120576, 92725987, 366692792, 1438275924, 5781789727, 23060129968, 93964095455, 380158396326, 1566773918574, 6416020471974, 26705782715536, 110498732504920, 463940330488819, 1937038870676946
(列表;图表;参考;听;历史;文本;内部格式)
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