Project Euler problem 46

On Friday, aarondf posted a call for help with problem 46 of Project Euler. It turned out to be a pretty simple problem, but aarondf had found a misleading definition of "odd composite" via Google which led him to miss the answer. I've become slightly obsessed with this problem, and have come up with a number of ways to write solution programs. You should try to write one yourself before reading further!

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