\"\"

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The sequence is \"\".

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The first term is \"\".

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The second term is \"\".

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The third term is \"\".

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The fourth term is \"\".

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The fifth term is \"\".

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These terms approach a finite number.

\

Therefore, the sequence is convergent.

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The approximate sum of the first five terms is \"\".

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\"\"

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The sequence is convergent.

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The sum of five terms is \"\".