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楼主 |
发表于 2020-7-14 21:17
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本帖最后由 蔡家雄 于 2020-7-15 11:54 编辑
如下级数的通式,是可以有的,但不太好找了!
2, 3, 5, 8, 37, 45, 82, 127, 590, 717, 1307, 2024, 9403, 11427, 20830, 32257, 149858, 182115, ...
连分数收敛到sqrt(7)的分子
2, 3, 5, 8, 37, 45, 82, 127, 590, 717, 1307, 2024, 9403, 11427, 20830, 32257, 149858, 182115,
331973, 514088, 2388325, 2902413, 5290738, 8193151, 38063342, 46256493, 84319835,
130576328,606625147, 737201475, 1343826622, 2081028097, 9667939010, 11748967107, ...
公式:(2+3*x+5*x^2+8*x^3+5*x^4*x^5+2*x^6-x^7)/(1-16*x^4+x^8)
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