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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 11 |
| 4 | 111 |
| 5 | 1111 |
| 6 | 1221 |
| 7 | 11111 |
| 8 | 12221 |
| 9 | 111111 |
| 10 | 122221 |
| 11 | 123321 |
| 12 | 1111111 |
| 13 | 1222221 |
| 14 | 1233321 |
| 15 | 1356531 |
| 16 | 11111111 |
| 17 | 12222221 |
| 18 | 12333321 |
| 19 | 12344321 |
| 20 | 13566531 |
| 21 | 111111111 |
| 22 | 122222221 |
| 23 | 123333321 |
| 24 | 123444321 |
| 25 | 135666531 |
| 26 | 135787531 |
| 27 | 1111111111 |
| 28 | 1222222221 |
[0,1,11,111,1111,1221,11111,12221,111111,122221, 123321,1111111,1222221,1233321,1356531,11111111, 12222221,12333321,12344321,13566531,111111111, 122222221,123333321,123444321,135666531,135787531, 1111111111,1222222221] |