| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1961 |
| 3 | 22982765 |
| 4 | 897960515649 |
| 5 | 87104111341922641 |
| 6 | 17553971396873140572281 |
| 7 | 6522485663882405640795371581 |
| 8 | 4101670732571144797304609148820545 |
[1,1961,22982765,897960515649,87104111341922641, 17553971396873140572281, 6522485663882405640795371581, 4101670732571144797304609148820545] |