Confusing math question..guess the next 3 numbers...?

Question

the numbers givin are:

1

11

21

1211

111221

312211 whats the next three numbers..took me days to figue out..

Answer 1

First row, one 'one': "1 1s"

Second row becomes: 11

Second row: two 'ones': 2 1's

Third row becomes: 21

21: One 'two' and one 'one'  1211

1211: One 1, one 2, two 1s → 11 12 21

111221: Three ones, two twos, one one → 31 22 11

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Next:

312211: one 3, one 1, two 2s, two 1s → 13112221

13112221: one 1, one 3, two 1s, three 2s, one 1 → 1113213211

Answer 2

are you sure u wrote it down right, it seems the sequence in the rows, should be 112 113 114 115, etc

Answer 3

1

11

21

1211

111221

312211

131222

111221

413221

141323