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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 272 |
| 3 | 14575 |
| 4 | 402470 |
| 5 | 8944910 |
| 6 | 173467508 |
| 7 | 3105145787 |
| 8 | 52667675560 |
| 9 | 858903297578 |
| 10 | 13596253940088 |
| 11 | 210237550445094 |
| 12 | 3189789818725966 |
| 13 | 47643526224223527 |
| 14 | 702294154680069306 |
| 15 | 10236443706663641968 |
[1,272,14575,402470,8944910,173467508,3105145787, 52667675560,858903297578,13596253940088, 210237550445094,3189789818725966, 47643526224223527,702294154680069306, 10236443706663641968] |