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""" | |
author: matt venn | |
turtle program to demonstrate a cellular automaton called Rule 90. | |
http://en.wikipedia.org/wiki/Sierpi%C5%84ski_triangle | |
It draws patterns that have the appearance of the Sierpinski triangle | |
http://en.wikipedia.org/wiki/Sierpi%C5%84ski_triangle | |
Rules: If the current pattern is: 111 110 101 100 011 010 001 000 |
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