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立方体编号是所有基本因子指数小于3。请参见A004709号.
序列
A004709号无立方体数：不可被任何大于1的立方体整除的数。
- {1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 25, 26, 28, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53, ...}
另请参阅
