Unraveling the Number Sequence Puzzle

 

Cracking the Code:

 Unraveling the Number Sequence Puzzle

What is next in this sequence of numbers: 

1, 11, 21, 1211, 111221, 312211, ______?

Answer: 13112221.

Explanation: Each sequence of numbers is a verbal representation of the sequence before it. Thus, starting with 1, the next sequence would be "one one," or "11." That sequence is followed by "two one," or "21," and so on and so forth.