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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 11 |
| 3 | 121 |
| 4 | 1111 |
| 5 | 12221 |
| 6 | 134431 |
| 7 | 1234321 |
| 8 | 1478741 |
| 9 | 1600951 |
| 10 | 17610461 |
| 11 | 161696051 |
| 12 | 193715071 |
| 13 | 1634570971 |
[1,11,121,1111,12221,134431,1234321,1478741, 1600951,17610461,161696051,193715071,1634570971] |