Problem 53120. Compute the Sequence of the Day

Created by ChrisR
Appears in Sequences & Series V

Difficulty:Rate

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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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39 Solutions
22 Solvers

Last Solution submitted on Apr 09, 2025

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3 Comments

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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Sequences & Series V

16 Problems
5 Finishers

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