i need to know how can i solve the following

[saudyonline]

dear all ,
i need to know how can i solve the following

Evaluate the sum

<img>http://geocities.com/saudyonline/images/untitled.bmp</img>

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thanks

[shankarvn]

Hi
I dont know if you are a pure math guy or something..I wrote what I felt was right...Check this out and let me know..I am an engineering guy who likes math..If you are looking at convergence and things like that ,then you might want to talk to a math guy..
I hope this helps
Shankar