Question 1149333
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There are several proofs by the method of Mathematical induction.


See the links


https://socratic.org/questions/show-by-induction-that-aa-n-1-1-2-3-2-5-2-2n-1-2-n-3-4n-2-1


https://math.stackexchange.com/questions/623504/prove-that-12-32-2n-12-displaystyle-frac4n3-n3



Happy learning (!)