Schoolin' Ya'll

This song was originally brought to my attention by my buddy, Pete. For anyone that wants to learn the numbers of pi out to the enth number, this fun little ditty will be sure to help you.

Also - there is a missing number in the scrolling text. I found it and thought it an error, but apparently it is part of the challenge of the video. You are supposed to catch that it is missing . Anyway, see if you are able to catch what number is missing.