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Old 2008-04-24, 20:09   #5
Siemelink
 
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Jan 2006
Hungary

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Quote:
Originally Posted by henryzz View Post
i have done all up to 20 by hand and they all go into the same sequence
i strongly suspect that the answer is yes
i am just about to write a quick program to search for another sequence
You only have start with the primes. As soon as the factor is smaller then your start prime you're done. This is likely to happen quickly, especially when your test candidate has multiple factors.
But a proof....

Willem.
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