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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 11 |
| 2 | 44 |
| 3 | 55 |
| 4 | 77 |
| 5 | 868 |
| 6 | 69996 |
| 7 | 2683862 |
| 8 | 6783876 |
| 9 | 268969862 |
| 10 | 37889398873 |
| 11 | 477788989887774 |
[0,11,44,55,77,868,69996,2683862,6783876, 268969862,37889398873,477788989887774] |