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1, 4, 12, 32, 78, 180, 400, 864, 1818, 3756, 7644, 15360, 30504, 60012, 117108, 226912, 436764, 835940, 1591790, 3017408, 5695448, 10709604, 20068182, 37487152, 69816450, 129674484, 240246868, 444079488, 819036168, 1507514552, 2769437312, 5078729888, 9297786596, 16994815856, 31017310020, 56530874800, 102891837550
(列表；图表；参考；听；历史；文本；内部格式)
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