Originally Posted by

**breitling** Need some slight help on the following sum, this is my first post so i hope ive put this in the correct place

sum of from k=2 to infinity (1/(k^3-k)

currently i have the following, ive turned it to a partial fraction and obtained

sum of from k=2 to infinity (k/(k^2-1)-(1/k)

Then from this entering numerical values for k:

(2/3-1/2+3/8-1/3......) and so on however cant see any relation between numbers cancelling etc like in previous questions i have done.

Thanks in advance for any help.