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The first term of a sequence is 13. Starting with the second term, each term is the sum of the cubes of the digits in the previous term. For example, the second term is 1^3 + 3^3 = 28. Find the  \(3rd\) term.

 May 11, 2022
 #1
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2^8 = 256 ? the 3rd term is 256 + 8^8, which is 16777472. I'm probably wrong though and it's 256

 May 11, 2022
 #2
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If the 2nd term==28, then:

 

3rd term==2^3  +  8^3 ==8  +  512 ==520 - which is the 3rd term.

 May 11, 2022

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