WIP
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@@ -254,8 +254,8 @@ p_n &= \sum_{k=0}^n \frac{1}{k!}b_{n,l}\\
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&> \sum_{k=0}^n \frac{1}{k!} \cdot \left(1 - \frac{(k-1)k}{2n}\right)\\
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&= s_n - \sum_{k=0}^n \frac{1}{k!}\frac{(k-1)k}{2n}\\
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&= s_n - \frac{1}{2n} \sum_{k=2}^n \frac{1}{(k-2)!}\\
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&= s_n - \frac{1}{2n} s_{n-2}
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$> s_n - \frac{3}{2n}
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&= s_n - \frac{1}{2n} s_{n-2}\\
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&> s_n - \frac{3}{2n}
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\end{align*}
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$$
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