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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 30 |
| 3 | 301 |
| 4 | 3013 |
| 5 | 30130 |
| 6 | 301301 |
| 7 | 3013013 |
| 8 | 30130130 |
| 9 | 301301301 |
| 10 | 3013013013 |
| 11 | 30130130130 |
| 12 | 301301301301 |
| 13 | 3013013013013 |
| 14 | 30130130130130 |
| 15 | 301301301301301 |
| 16 | 3013013013013013 |
[3,30,301,3013,30130,301301,3013013,30130130, 301301301,3013013013,30130130130,301301301301, 3013013013013,30130130130130,301301301301301, 3013013013013013] |