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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 11 |
| 3 | 91 |
| 4 | 891 |
| 5 | 8801 |
| 6 | 88913 |
| 7 | 908755 |
| 8 | 9377467 |
| 9 | 97464799 |
| 10 | 1018872811 |
| 11 | 10701243741 |
| 12 | 112835748609 |
| 13 | 1193692544825 |
| 14 | 12663809507129 |
| 15 | 134678108144591 |
| 16 | 1435345208419771 |
| 17 | 15326122342137035 |
| 18 | 163920458145421109 |
[1,1,11,91,891,8801,88913,908755,9377467,97464799, 1018872811,10701243741,112835748609,1193692544825, 12663809507129,134678108144591,1435345208419771, 15326122342137035,163920458145421109] |