Looks to me like you have a typo. I get
1,11,21,1211,111221,312211,13112221,...
or even
1,11,21,1211,3112,211213,312213,...
1,11,21,2111,111221,?,?
what are the next two numbers of this sequence?
1 answer
what are the next two numbers of this sequence?
1 answer