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Little power sum (Posted on 2024-11-15)

Find the sum of all positive integers of the form 2^r*3^s, where r and s are nonnegative integers that do not exceed 4.

No Solution Yet Submitted by Danish Ahmed Khan

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re: answer

| Comment 2 of 4 |

(In reply to answer by Larry)

WolframAlpha agrees:

Sum[2^n 3^m, {m, 0, 4}, {n, 0, 4}] = 3751

The WolframAlpha sigma function is the same:

n=5, DivisorSigma[1, 6^(n-1)] = 3751

Edited on November 15, 2024, 9:45 am

Posted by broll on 2024-11-15 09:28:46

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