$\"\"$

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The sequence is $\"\"$ .

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The first term of the sequence is $\"\"$ .

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Find the value of $\"\"$ .

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For $\"\"$ , $\"\"$ .

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$\"\"$

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For $\"\"$ , $\"\"$ .

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$\"\"$

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For $\"\"$ , $\"\"$ .

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$\"\"$

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For $\"\"$ , $\"\"$ .

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$\"\"$

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For $\"\"$ , $\"\"$ .

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$\"\"$

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The next terms of the sequence are $\"\"$ .

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The sum of the terms of the series is $\"\"$ .

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Substitute the corresponding values in $\"\"$ .

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$\"\"$ .

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Therefore, $\"\"$ .

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$\"\"$

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$\"\"$ .