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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 13 |
| 2 | 283 |
| 3 | 8667 |
| 4 | 342969 |
| 5 | 16671885 |
| 6 | 962672355 |
| 7 | 64467073755 |
| 8 | 4917699360945 |
| 9 | 421377918441165 |
| 10 | 40104072098340075 |
| 11 | 4200511400073848475 |
| 12 | 480454695780380469225 |
| 13 | 59617988532820945752525 |
| 14 | 7980059238850231812954675 |
| 15 | 1146519564522299271411982875 |
[1,13,283,8667,342969,16671885,962672355, 64467073755,4917699360945,421377918441165, 40104072098340075,4200511400073848475, 480454695780380469225,59617988532820945752525, 7980059238850231812954675, 1146519564522299271411982875] |