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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 54 |
| 3 | 8103 |
| 4 | 8886110 |
| 5 | 72004899337 |
| 6 | 4311231547115195 |
| 7 | 1907346572495099690525 |
| 8 | 6235149080811616882909238708 |
| 9 | 150609731458503054835259413016767498 |
| 10 | 26881171418161354484126255515800135873611118 |
[2,54,8103,8886110,72004899337,4311231547115195, 1907346572495099690525, 6235149080811616882909238708, 150609731458503054835259413016767498, 26881171418161354484126255515800135873611118] |