Double Tower of Hanoi contains 2n disks of n different sizes, with two disks of each size. You must move all 2n disks from one of three locations to another, but you may move only one disk at a time, without putting a larger disk over a smaller one. Let T(n) be the number of moves necessary to move such a tower of 2n disks. Prove that T(n) = 2"+1 – 2 for all n> 1.

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Double Tower of Hanoi contains 2n disks of n different sizes, with two disks of
each size. You must move all 2n disks from one of three locations to another, but you
may move only one disk at a time, without putting a larger disk over a smaller one.
Let T(n) be the number of moves necessary to move such a tower of 2n disks. Prove that
T(n) = 2"+1 – 2 for all n > 1.
%3D
Transcribed Image Text:Double Tower of Hanoi contains 2n disks of n different sizes, with two disks of each size. You must move all 2n disks from one of three locations to another, but you may move only one disk at a time, without putting a larger disk over a smaller one. Let T(n) be the number of moves necessary to move such a tower of 2n disks. Prove that T(n) = 2"+1 – 2 for all n > 1. %3D
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