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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 65 |
| 3 | 1561 |
| 4 | 24485 |
| 5 | 419506 |
| 6 | 6637755 |
| 7 | 106761517 |
| 8 | 1679728622 |
| 9 | 26519446624 |
| 10 | 415662734974 |
| 11 | 6527075798544 |
| 12 | 102305652745928 |
| 13 | 1603242301015531 |
| 14 | 25121020499653935 |
| 15 | 393548527029714107 |
| 16 | 6165086304179204952 |
[1,65,1561,24485,419506,6637755,106761517, 1679728622,26519446624,415662734974,6527075798544, 102305652745928,1603242301015531, 25121020499653935,393548527029714107, 6165086304179204952] |