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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 99 |
| 3 | 316 |
| 4 | 3796 |
| 5 | 39064 |
| 6 | 336357 |
| 7 | 3254726 |
| 8 | 31035211 |
| 9 | 292685424 |
| 10 | 2799525337 |
| 11 | 26595754073 |
| 12 | 253049304865 |
| 13 | 2411701918670 |
| 14 | 22950798550179 |
| 15 | 218539972439888 |
| 16 | 2081095747834009 |
| 17 | 19814659576096763 |
| 18 | 188682858931600792 |
[9,99,316,3796,39064,336357,3254726,31035211, 292685424,2799525337,26595754073,253049304865, 2411701918670,22950798550179,218539972439888, 2081095747834009,19814659576096763, 188682858931600792] |