Problem 53120. Compute the Sequence of the Day

Created by ChrisR

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A sequence starts with 1 and 2, and each subsequent term is the sum of the digits of the product of the previous two terms. As a result, the third term is 2, the fourth is 4, and the fifth is 8. 
Write a function to compute the nth term of the sequence. 

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Last Solution submitted on Apr 09, 2025

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3 Comments

goc3 on 28 Apr 2022

This is a good problem. James would be proud of your test suite.

ChrisR on 7 May 2022

Thanks goc3!

Lincoln Poon on 3 Oct 2022

Very nice problem. And a very elegant series:)

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Problem 53120. Compute the Sequence of the Day

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Last 200 Solutions

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Problem 53120. Compute the Sequence of the Day

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Last 200 Solutions

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Solution Comments

Problem Recent Solvers22

Suggested Problems

More from this Author298

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