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1, 1, 2, 5, 10, 24, 52, 124, 282, 668, 1548, 3654, 8533, 20093, 47033, 110533, 258807, 607227, 1421055, 3329585, 7785995, 18221563, 42575336, 99539106, 232398659, 542864111, 1266567155, 2956342341, 6893180336, 16078817198, 37469245219, 87347384305, 203447081205
(列表;图表;参考;听;历史;文本;内部格式)
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