Найдите наименьшее натуральное значение k для которого
[tex]\displaystyle \frac{1}{1^3 + 3\cdot 1^2 + 2} +\frac{1}{2^3 + 3\cdot 2^2 +4}+ \dots + \frac{1}{k^3 + 3k^2 + 2k }\ \textgreater \ \frac{249}{1000}[/tex]
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