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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 22409620 |
| 3 | 9651199594275 |
| 4 | 96076801068337216 |
| 5 | 121265960728368199375 |
| 6 | 41451359960612034644436 |
| 7 | 5752227470227262715982165 |
| 8 | 412646679764073090531066880 |
| 9 | 17883769897375781105874361581 |
[1,22409620,9651199594275,96076801068337216, 121265960728368199375,41451359960612034644436, 5752227470227262715982165, 412646679764073090531066880, 17883769897375781105874361581] |