Collatz Problem as a Cellular Automaton

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Start with an integer ; if it is even, divide by two, but if it is odd, triple it and add 1; repeat this process. The Collatz problem asks whether 1 is reached. In all known cases, the sequence always reaches 1, but no proof is known that this is always true. Here is a cellular automaton version of this, writing in base 6.

Contributed by: Enrique Zeleny (March 2011)
Open content licensed under CC BY-NC-SA


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