Do you like math puzzles? Here:

[PoindexterOglethorpe]

5. My high school math teacher would say that such problems were meaningless,

because you could never possibly know what the next sequence was.

The math program I was in was called UICSM, for the University of Illinois Committee on School Mathematics. It was a "new math" in the early 1960s and was incredible. We proved EVERYTHING which was why I recalled lots and lots, and some 35 years after taking my last high school math class was able to test into 2nd year algebra at my local junior college. An absolutely amazing program. Even now, nearly 60 years after high school, I still remember a lot of content from that class.