ABACABA pattern
Mathematical fractal pattern / From Wikipedia, the free encyclopedia
The ABACABA pattern is a recursive fractal pattern that shows up in many places in the real world (such as in geometry, art, music, poetry, number systems, literature and higher dimensions).[1][2][3][4] Patterns often show a DABACABA type subset. AA, ABBA, and ABAABA type forms are also considered.[5]
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/4/42/Binary_number_dabacaba_pattern.png/100px-Binary_number_dabacaba_pattern.png)