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Yes it can; a little bird told me that your series is equal to $\frac18\left(4+5\sqrt[8]{e}\sqrt{2\pi}\mathrm{erf}\left(\frac1{\sqrt{8}}\right)\right)$.
As for this being a good MO query, well...
http://www.wolframalpha.com/input/?i=sum+n!%2F%28%282^%28n-1%29%29%282n-1%29!%29
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