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A094447号 |
| 两个正数立方的和,可以被13整除。 |
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9
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65, 91, 351, 468, 520, 559, 637, 728, 793, 1001, 1027, 1339, 1456, 1547, 1729, 1755, 2457, 2808, 3718, 3744, 3887, 4160, 4394, 4472, 4706, 4914, 4940, 5096, 5642, 5824, 6175, 6344, 7163, 7202, 7371, 7657, 8008, 8125, 8190, 8216, 9009
(列表;图表;参考;听;历史;文本;内部格式)
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抵消
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1,1
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链接
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例子
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不能被13整除的和用星号表示:
……|。。。1....8...27...64...125...216...343...512...729..1000..1331
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1...|...*....*....*...65.....*.....*.....*.....*.....*..1001.....*
8...|...*....*....*....*.....*.....*...351...520.....*.....*..1339
27..|...*....*....*...91.....*.....*.....*.....*.....*..1027.....*
64..|..65....*...91....*.....*.....*.....*.....*...793.....*.....*
125.|...*....*....*....*.....*.....*...468...637.....*.....*..1456
216.|...*....*....*....*.....*.....*...559...728.....*.....*..1547
343.|...*..351....*....*...468...559.....*.....*.....*.....*.....*
512.|...*..520....*....*...637...728.....*.....*.....*.....*.....*
729.|...*....*....*..793.....*.....*.....*.....*.....*..1729.....*
1000|1001....*.1027....*.....*.....*.....*.....*..1729.....*.....*
1331|…*。1339....*....*..1456..1547.....*.....*.....*.....*.....*
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数学
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upto[n_]:=块[{t},并集@Reap[Do[If[Mod[t=x^3+y^3,13]==0,母猪@t],{x,n^(1/3)},{y,最小[x,(n-x^3)^(1/3)]}]][[2,1]]];高达[10^4](*乔瓦尼·雷斯塔2020年6月12日*)
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交叉参考
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关键字
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非n,容易的
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作者
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Jun Mizuki(铃木32(AT)sanken.osaka-u.ac.jp),2004年6月9日
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扩展
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状态
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经核准的
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