Have fun with this one. What's the next line in the sequence??

1
11
21
1211
111221
???????????????????????????

122221111?

312211

Oh, I see. You're right. It's describing the previous number, in numbers.

I was continuing the fib sequence that they summed up to, using the same alternating pattern.

Yeah..Palarran is correct. Sanchek its the programmer mind coming out of you using that pattern (since that was my first answer too when I was asked the same question) =)