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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 18 |
| 3 | 927 |
| 4 | 1656 |
| 5 | 94095 |
| 6 | 144135 |
| 7 | 9692874 |
| 8 | 12764034 |
| 9 | 984024783 |
| 10 | 1044876843 |
| 11 | 90695018313 |
| 12 | 184635924282 |
| 13 | 9238285681452 |
| 14 | 16945429767822 |
| 15 | 946490231198502 |
| 16 | 1481588810203581 |
| 17 | 96566699618177661 |
| 18 | 121999692536490051 |
| 19 | 9802992767171580531 |
| 20 | 10882965095456675121 |
[1,9,18,927,1656,94095,144135,9692874,12764034, 984024783,1044876843,90695018313,184635924282, 9238285681452,16945429767822,946490231198502, 1481588810203581,96566699618177661, 121999692536490051,9802992767171580531, 10882965095456675121] |