I am a high school student with a particular interest in mathematics and computer science. I have always been intrigued by recreational mathematics (who hasn't been?) and more advance concepts, everything from knot theory to combinatorics. Of course, I can only understand very basic summaries of ideas in some of these branches of maths, as I have just finished Calc 3, so I am obviously unable to understand the advanced concepts many areas of maths hold.

I was just wondering if anyone had any interesting papers that I could read? I don't have math class presently, but I would very much like to keep learning. Of course, the papers can be in almost any area of mathematics, and as long as they aren't super advanced, I would be willing to do extra research to understand them if I have to. Thanks in advance for anyone who does!

(Of course, I could just search the internet, but I was wondering what other math enthusiasts have to say about the topic.)