NEW CHALLENGE

Congratulations to Cadet Jewell who correctly answered the challenge with only a little help.  I will leave it unanswered here for those of you who might still be working.

It's been awhile since I posted a challenge, so here's one that is so easy even a knuckle draggin' boatswainsmate could get it:

Here is a series of numbers. What is the next number in the sequence?
1
11
21
1211
111221
312211
13112221

This challenge will end at 0730 Friday, 11 January.  The first cadet to submit the correct answer will win  a valuable prize.  Good luck.

A confused army cadet.