搜索： 编号：184253
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A184253号
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| 0..5中数字x（i=1..n）的字符串数，总和i^3*x（i）等于n^3*5 |
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1, 1, 2, 4, 10, 41, 135, 477, 1719, 5987, 20942, 72586, 245893, 825328, 2735778, 8923167, 28779207, 91732303, 288568276, 898134715, 2765300373, 8421195140, 25394904018, 75848295457, 224397367622, 658053395498, 1913298309395
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1,3
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例子
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n=7的一些解
..1....5....1....0....0....4....3....5....5....4....3....1....5....1....2....4
..3....1....5....4....5....4....2....4....5....3....3....3....5....4....1....1
..0....1....2....1....1....1....4....1....2....1....5....5....4....0....1....3
..5....0....4....4....1....1....0....3....0....4....1....1....3....1....2....0
..1....1....4....5....2....0....0....1....5....3....5....4....1....4....0....2
..1....4....4....2....3....1....1....3....3....0....4....3....1....2....4....0
..3....2....0....1....2....4....4....2....1....3....0....1....3....2....2....4
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非n
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