What does this summation do?
I was given this summation today and asked to find out what it did. So far my friend and I have run into a brick wall at every turn.
Here's the summation:
This is the only information we were given, and we interpreted and as being integers in some set of N integers, where the first integer in the set is
The problem we've run into is that when i gets to be N, j = N+1 and is therefore undefined. So we've been interpreting it as i goes from 1 to N-1. Does anyone recognize this as a famous series of some sort, or know what it does?
Thanks for any information anyone can provide,