\[\large{\frac { 2 }{ e } +\frac { 4 }{ 3{ e }^{ 3 } } +\frac { 6 }{ 5{ e }^{ 5 } } + \cdots = \, ? } \]

\[\]

**Bonus**:Generalize for

\[\large{\sum _{ n=1 }^{ m }{ \frac { 2n }{ \left( 2n-1 \right) { e }^{ \left( 2n-1 \right) } } } }\]

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