Line 1: 1
Line 2: 11
Line 3: 21
Line 4: 1211
Line 5: 111221
Line 6: 312211
Line 7: 13112221
Line 8: ?

Line 1: 1
Line 2: 11
Line 3: 21
Line 4: 1211
Line 5: 111221
Line 6: 312211
Line 7: 13112221
Line 8: 1113213211

Nice, but it isn't a conundrum really, and it appears to have multiple solutions since you left it open-ended.

wrong
also who is trying to solve pls elaborate the solution

sorry I didnt notice it at first while Ive a headache to day execuse me
it is correct