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Re: sum over i+j+k==n


On Dec 23, 2007, at 4:36 AM, Jack Kennedy wrote:

> Hi All,
> I often find myself needing to sum over triples
> (or other tuples) like i,j,k where i+j+k=n. Is there
> a convenient way to write this in Mathematica?
> Thanks,
> Jack
>
> (version 5.1)

I believe the Partitions function in Combinatorica gives you this  
list in version 5.


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