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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 97 |
| 4 | 959 |
| 5 | 10150 |
| 6 | 106411 |
| 7 | 1120383 |
| 8 | 11791412 |
| 9 | 124095989 |
| 10 | 1306056075 |
| 11 | 13745692417 |
| 12 | 144667727920 |
| 13 | 1522567835402 |
| 14 | 16024396462730 |
| 15 | 168650144696133 |
| 16 | 1774973019338383 |
| 17 | 18680856897784860 |
| 18 | 196608292474782756 |
[1,9,97,959,10150,106411,1120383,11791412, 124095989,1306056075,13745692417,144667727920, 1522567835402,16024396462730,168650144696133, 1774973019338383,18680856897784860, 196608292474782756] |