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Non-Terminating Reversal-Addition
Start with the number 512. Then at each step take the number generated, and add it to the number obtained by reversing its base 2 digits. The pattern produced appears never to terminate. Very little is known about it.




"Non-Terminating Reversal-Addition" from The Wolfram Demonstrations Project
 http://demonstrations.wolfram.com/NonTerminatingReversalAddition/
Contributed by: Stephen Wolfram
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