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**tony123****Member**- Registered: 2007-08-03
- Posts: 189

find all positive integers to

*Last edited by tony123 (2009-04-16 06:24:53)*

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**Identity****Member**- Registered: 2007-04-18
- Posts: 934

tony123 wrote:

find all positive integers to

Since this must be a cube,

No solution?

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 85,358

Hi Tony123;

What are you asking for? Are you asking for what value of n that would make that sum equal 400, because I don't think that is possible.

bobbym

**In mathematics, you don't understand things. You just get used to them.Of course that result can be rigorously obtained, but who cares?Combinatorics is Algebra and Algebra is Combinatorics.**

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