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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 43 |
| 4 | 6893 |
| 5 | 1757233 |
| 6 | 563636267 |
| 7 | 209420753 |
| 8 | 478130829203 |
| 9 | 68506995922171 |
| 10 | 245296117830341 |
| 11 | 107670977147002963 |
| 12 | 4137830996824703141 |
| 13 | 16215855859012574521 |
| 14 | 3891295582697539371727 |
| 15 | 20259360308241533953897 |
| 16 | 3150687184319350782852593 |
| 17 | 574603643148719626677940181 |
[1,1,43,6893,1757233,563636267,209420753, 478130829203,68506995922171,245296117830341, 107670977147002963,4137830996824703141, 16215855859012574521,3891295582697539371727, 20259360308241533953897,3150687184319350782852593, 574603643148719626677940181] |