[insidious]

Aren't your first two expressions wrong?

The first is undefined (It's infinite). And the second is just 1...

Obviously the infinite sequence you defined below is correct, and you 100% didn't come up with it yourself, but the expressions don't describe it.

In addition to digging up a post from a month ago, I'm not sure you understand the logic that is going into this code. It's a recursive function. That's why it's 1. and the first one won't go on for infinity...