Riddle of the Day

Hmm, i think I'm late again but anyway...

Here's the answer to Saturdays riddle: A shadow

Congrats to the dude who got it right, and thanks for your answers those who didn't, and now time for the next riddle.

1
11
21
1211
111221
312211

Whats next in the sequence?

Remember to put your answers in the comments section and thanks for playing.