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1, 1, 2, 2, 5, 8, 10, 20, 28, 41, 62, 102, 124, 208, 278, 426, 571, 872, 1158, 1718, 2306, 3304, 4402, 6286, 8446, 11725, 15644, 21642, 28636, 38956, 52296, 70106, 93224, 124758, 165266, 218916, 290583, 381706, 503174, 659160, 865020, 1124458, 1473912, 1907298
(列表;图表;参考文献;听;历史;文本;内部格式)
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抵消
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0,3
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评论
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n的合成是具有和n的正整数的有限序列。
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链接
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例子
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a(1)=1到a(7)=20组分:
(1) (2)(3)(4)(5)(6)(7)
(11) (111) (22) (113) (33) (115)
(112) (122) (114) (133)
(211) (221) (222) (223)
(1111) (311) (411) (322)
(1112) (1113) (331)
(2111) (3111) (511)
(11111) (11112) (1114)
(21111) (1222)
(111111) (2221)
(4111)
(11113)
(11122)
(22111)
(31111)
(111112)
(111211)
(112111)
(211111)
(1111111)
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数学
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表[Length[Select[Join@@Permutations/@IntegerPartitions[n],UnsameQ@@Length/@Split[#]&]],{n,0,10}]
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交叉参考
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关键词
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非n
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作者
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扩展
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状态
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经核准的
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