Question

We are now going to tile walkways using only identical 1-unit tiles (of an unlimited supply) and identical 3-unit tiles (of an unlimited supply). Use a recursive technique to determine the total number of different ways to tile a 20-unit walkway using these tiles. Explain why the recursive formula you use works -- and be certain to use proper recursive, subscript notation in your solution. Your final answer should be an integer.

Answer 1

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