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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 78 |
| 3 | 734 |
| 4 | 7081 |
| 5 | 109228 |
| 6 | 1456855 |
| 7 | 18733087 |
| 8 | 251641086 |
| 9 | 3354939709 |
| 10 | 44459037210 |
| 11 | 591410913625 |
| 12 | 7865974374583 |
| 13 | 104544861995486 |
| 14 | 1389898494780143 |
| 15 | 18479036986992209 |
| 16 | 245664832111845278 |
| 17 | 3265995303275846454 |
[1,78,734,7081,109228,1456855,18733087,251641086, 3354939709,44459037210,591410913625,7865974374583, 104544861995486,1389898494780143, 18479036986992209,245664832111845278, 3265995303275846454] |