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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 91 |
| 4 | 1809 |
| 5 | 48521 |
| 6 | 1643863 |
| 7 | 67381875 |
| 8 | 3243606817 |
| 9 | 179405231761 |
| 10 | 11213025902631 |
| 11 | 781604862035339 |
| 12 | 60120379931640625 |
| 13 | 5058593367221610009 |
| 14 | 462199816484860893559 |
| 15 | 45574025454771003821731 |
| 16 | 4823543138131670132557377 |
| 17 | 545448517762149418525390625 |
[1,1,7,91,1809,48521,1643863,67381875,3243606817, 179405231761,11213025902631,781604862035339, 60120379931640625,5058593367221610009, 462199816484860893559,45574025454771003821731, 4823543138131670132557377, 545448517762149418525390625] |