Can you write the recursion formula for this series?'(adsbygoogle = window.adsbygoogle || []).push({});

a (then little n) = 1/2^n

*the 2 is to the nth power, not the one

*for the first half, it is written a then a little n to the bottom right.

I don't understand how to even go about this. Any help would be great thanks.

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# Homework Help: Recursion formula

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