| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 6 |
| 3 | 244 |
| 4 | 10227 |
| 5 | 960325 |
| 6 | 170405645 |
| 7 | 61836040854 |
| 8 | 45634751291449 |
| 9 | 69219300810586905 |
| 10 | 216612095709360988933 |
| 11 | 1408049695722118625807058 |
| 12 | 18999842797533792961661827884 |
[0,6,244,10227,960325,170405645,61836040854, 45634751291449,69219300810586905, 216612095709360988933,1408049695722118625807058, 18999842797533792961661827884] |