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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 129 |
| 3 | 2879 |
| 4 | 61561 |
| 5 | 1338834 |
| 6 | 29114990 |
| 7 | 632777378 |
| 8 | 13752553340 |
| 9 | 298894998879 |
| 10 | 6496115080739 |
| 11 | 141185007792788 |
| 12 | 3068481262669872 |
| 13 | 66689639658671547 |
| 14 | 1449416716033629216 |
| 15 | 31501277073963713498 |
| 16 | 684641239698193508103 |
[3,129,2879,61561,1338834,29114990,632777378, 13752553340,298894998879,6496115080739, 141185007792788,3068481262669872, 66689639658671547,1449416716033629216, 31501277073963713498,684641239698193508103] |