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| n | a(n) |
|---|---|
| 1 | 10 |
| 2 | 98 |
| 3 | 940 |
| 4 | 8798 |
| 5 | 80140 |
| 6 | 709238 |
| 7 | 6096100 |
| 8 | 50950718 |
| 9 | 415060060 |
| 10 | 3305238278 |
| 11 | 25807024660 |
| 12 | 198131841038 |
| 13 | 1499550640780 |
| 14 | 11213044626518 |
| 15 | 82997777543620 |
| 16 | 609099122145758 |
| 17 | 4437879770746300 |
| 18 | 32138240678881958 |
| 19 | 231547934781860980 |
| 20 | 1661033550903240878 |
[10,98,940,8798,80140,709238,6096100,50950718, 415060060,3305238278,25807024660,198131841038, 1499550640780,11213044626518,82997777543620, 609099122145758,4437879770746300, 32138240678881958,231547934781860980, 1661033550903240878] |