What row of numbers comes next? 1 11 21 1211 111221 312211 13112221

Why this works

This riddle is based on a pattern known as the "look-and-say" sequence, where each row describes the count of digits in the previous row. For example, starting with "1," we see it as "one 1," which translates to "11." The next row, "11," is read as "two 1s," leading to "21." This continues, where each new row breaks down the previous row into counts of the digits it contains. So, when we reach "13112221," we describe it as "one 3, one 1, two 2s, and two 1s," resulting in the next row being "1113213211." It's a clever exercise in observation and counting!