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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 129 |
| 3 | 3447 |
| 4 | 87561 |
| 5 | 2244335 |
| 6 | 57594572 |
| 7 | 1477281166 |
| 8 | 37892542998 |
| 9 | 971951600750 |
| 10 | 24930755913741 |
| 11 | 639478906822565 |
| 12 | 16402762675466111 |
| 13 | 420734164143854022 |
| 14 | 10791915992268202779 |
| 15 | 276814817305204046858 |
| 16 | 7100355778766419144128 |
[3,129,3447,87561,2244335,57594572,1477281166, 37892542998,971951600750,24930755913741, 639478906822565,16402762675466111, 420734164143854022,10791915992268202779, 276814817305204046858,7100355778766419144128] |