Look-And-Say Sequence Based Series

This is what you need to find! 

That's called as look - and - say sequence in math. It's all about attaching count sequentially of the number of same digits in previous one to find the next one in sequence. 

1. First number in sequence is 1.

2. To find the next one in sequence counting number of same digits in previous & writing the count with that digit. Here 1 appears one time so it's 11.

3. In previous, 1 appears 2 times so here it's 21.

4. In previous, 2 appears once & 1 appears once. Hence , it's 1211!

5. Now here  previously 1 appears once, 2 appears once & again 1 appears twice. So next one is 111221.

6. Looking at previous, 1 appears thrice, 2 appears twice & again 1 appears once. So the next one is 312211!   

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