I didn’t… I just knew what I was looking for in Google 
They’re screenshots, nothing I’ve created, sadly.
The easiest way would be to knock something out in Grasshopper but it wouldn’t be quick or easy for me to do it.
I was too busy drawing Ligers and eating tater tots in Maths class…
It’s a set of concentric circles I’m guessing coupled with the spiral?
Good hunting!
Andy