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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 69 |
| 3 | 1741 |
| 4 | 65025 |
| 5 | 3238401 |
| 6 | 202252549 |
| 7 | 15216086789 |
| 8 | 1340493558497 |
| 9 | 135418524663457 |
| 10 | 15436319894361141 |
| 11 | 1960277599669850517 |
| 12 | 274474966233168968353 |
| 13 | 42012725272366653895169 |
| 14 | 6979546631782182590117189 |
| 15 | 1250777360824265136694022341 |
| 16 | 240516661686854988775792192833 |
[1,5,69,1741,65025,3238401,202252549,15216086789, 1340493558497,135418524663457,15436319894361141, 1960277599669850517,274474966233168968353, 42012725272366653895169,6979546631782182590117189, 1250777360824265136694022341, 240516661686854988775792192833] |