Help with 12 point round ripple afghan

[cookworm]

I've been all over the internet to see if this exists, but I'm coming up empty. My math skills aren't the greatest, so I need help!!!!

I'm working on a 12 point round ripple afghan, and I was wondering if there is a chart somewhere that tells you how many stitches you have between points for each round so I have something to check my stitch count against. I'm just not getting the mathematical formula of how this afghan increases, and I want to be sure I'm doing it right. THIS is the pattern I'm using. I'm probably going to go about 42 rounds. Thank you!