There is no simple pattern

Here 2 very cool GO-Videos (embedding impossible) :


http://youtu.be/BNOQUPmgbnY"Pi - Patterns"

http://youtu.be/Yi80SuJx3Kk "Pi"

"π (also known as Pi) is a 1998 black-and-white American psychological thriller directed by Darren Aronofsky, who won the Directing Award at the 1998 Sundance Film Festival, the Independent Spirit Award for Best First Screenplay and the Gotham Open Palm Award. This film was Darren Aronofsky's directorial debut.

The title refers to the mathematical constant π"
Wikipedia