Generating the counting sequence

Problem solving with programming: Generating the counting sequence

Given an integer N, we have to generate the nth sequence of the following pattern.

• "1"
• "11" as the previous item contains one instance of 1.
• "21" as the previous entry contains two 1's.
• "1211" as the previous entry contains one 2 and one 1.

http://www.codeproject.com/Articles/751754/Counting-and-Generating-Sequences
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