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| n | a(n) |
|---|---|
| 0 | 1997 |
| 1 | 9988 |
| 2 | 18887 |
| 3 | 97768 |
| 4 | 184547 |
| 5 | 930028 |
| 6 | 1750067 |
| 7 | 9350638 |
| 8 | 17711177 |
| 9 | 94822948 |
| 10 | 179745797 |
| 11 | 977293768 |
| 12 | 1844686547 |
| 13 | 9301551028 |
| 14 | 17503102067 |
| 15 | 93523232638 |
| 16 | 177146465177 |
| 17 | 948711106948 |
| 18 | 1798312224797 |
| 19 | 9772534363768 |
| 20 | 18446168716547 |
[1997,9988,18887,97768,184547,930028,1750067, 9350638,17711177,94822948,179745797,977293768, 1844686547,9301551028,17503102067,93523232638, 177146465177,948711106948,1798312224797, 9772534363768,18446168716547] |