Problem 2581. Sum of series VII

Created by Grzegorz Knor

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What is the sum of the following sequence:

 Σ(km^k)/(k+m)! for k=1...n

for different n and m?

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4421 Solutions
1500 Solvers

Last Solution submitted on Oct 15, 2025

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goc3 on 13 Jun 2017

Additional test cases have been added.

GeeTwo on 4 Jul 2022

Test case 2 (and likely others) appear broken. For n-1, m=2, this should be:
1*2^1/(1+2) = 2/3, not 1/3.

Dyuman Joshi on 6 Jul 2022

@GeeTwo, the test suite is perfectly fine, as indicated by the reference solutions and the submitted solution.

Sanjeev on 11 Jul 2022

Loved the Computer Science concept to make the computation more efficient!!

Nguyễn Tuấn Kiệt on 24 Sep 2023

very good

Aditya Majumdar on 4 Aug 2024

Interesting question.

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Problem 2581. Sum of series VII

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Problem 2581. Sum of series VII

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Last 200 Solutions

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Problem Recent Solvers1500

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More from this Author9

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