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Prove that \(20^{2n}+16^{2n}-3^{2n-1}\)is divisible by 323. 

 Jun 24, 2020
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It isn't!

 

Let n = 1

202 + 162 - 3 = 653

 

653/323 = 2.02167...

 

I think you must mean prove that   \(20^{2n}+16^{2n}-3^{2n}-1\)  is divisible by 323 for integer n

 Jun 25, 2020
edited by Alan  Jun 25, 2020

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