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October 11th, 2013, 06:10 PM  #1 
Senior Member Joined: Jan 2012 Posts: 159 Thanks: 0  Finding the ClosedForm Expression For a Recurrence
n is deemed to only be a power of 3. Doing repeated substitution I get: So this is going to keep going until becomes equal to whatever n is. Also since n is a power of 3 we know this will be when Therefore Not really sure where to go from here as it seems to be a geometric series yet that really does not help me with the closed form. Also I have tried to just work out a pattern looking at the numbers: so the 4 and the 3i I get but not to sure how to resolve the rest. I believe it has to do with finding closed form for a geometric series... Any help would be appreciated! 

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closedform, expression, finding, recurrence 
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