(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I have to find an implicit rule for this pattern, Can Someone please help me?

3, 9, 81, 65, 61, 37,... and so on

2. Relevant equations

Im stuck not sure how to approach and therefore get a rule

3. The attempt at a solution

I tried using the arithmetic and geometric formulas but im not getting anywhere

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# Homework Help: Implicit Formula

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