I believe this question makes no sense. The sigma is followed by an equal sign, the indices on the sum involve $n$, yet the sum is supposedly equal to something in terms of $n$.
@pilko FYI, the differences of rep should not influence your decision, at least in my view and, I think, in the view of many users on the site. If your edit is correct, you are actually doing a favor to the OP, right, irrespectively of your rep? Were you previously chastised for this odd reason?
@SimplyBeautifulArt closed, now, precisely because it makes no sense. (I'm tempted to downvote the answers for guessing what is meant, without waiting for the asker to clarify.)
^ trash: check it out if your concerned. I had lost track of the status of the question linked by @Simply posted, and I re linked in my last comment. And found myself alerting others to the asker's statements, etc... So. We need only one more delete vote for the question linked by @Simply, and reposted by me.
@SimplyBeautifulArt Gone now. I know I've visited a couple of times, waiting for it's closure. Anyway, what post are you linking to immediately above. I don't see anything anymore :P
