John VanSickle <evi### [at] hotmailcom> wrote:
> For instance, the second problem looks iterative, but there is a direct
> formula for any member of the Fibonacci series
> (1/sqrt(5) * ( (phi^(n+3)-1)/(phi-1) - ((1-phi)^(n+3)-1)/(1-phi-1) )

hmm, did you find out the formula for yourself or looked it up somewhere?  Most
of the fun in solving these puzzles is coming up with solutions by yourself...

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