Morning after effects goofery.
Spiral image yanked off wikipedia:
https://commons.wikimedia.org/wiki/File:Ulam_1.png
I was meaning to do something else about this thing at some point, but the result from this session was too fun not to share.

You're free to use this for customization or art if you like. The license rules are same as original's (find on above url if you need).
You can download a sequence here: https://sta.sh/01qr9wz2mxr2
Set a black BG and play at 8 fps to replicate what you see. Lemme know if you need any help!