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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2007 |
| 3 | 137251 |
| 4 | 6879341 |
| 5 | 407374825 |
| 6 | 24734141495 |
| 7 | 1473655240387 |
| 8 | 87658679181837 |
| 9 | 5224891480887673 |
| 10 | 311448275014507959 |
| 11 | 18561000349587530731 |
| 12 | 1106162872162349349293 |
| 13 | 65924427026919551179361 |
[1,2007,137251,6879341,407374825,24734141495, 1473655240387,87658679181837,5224891480887673, 311448275014507959,18561000349587530731, 1106162872162349349293,65924427026919551179361] |