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| n | a(n) |
|---|---|
| 0 | 5 |
| 1 | 281 |
| 2 | 15949 |
| 3 | 905469 |
| 4 | 51427345 |
| 5 | 2920698969 |
| 6 | 165875085993 |
| 7 | 9420532825569 |
| 8 | 535019698383817 |
| 9 | 30385338406252141 |
| 10 | 1725672517842528533 |
| 11 | 98006005364525379169 |
| 12 | 5566048591606153424165 |
| 13 | 316112230152526972676369 |
| 14 | 17952941015049437421057421 |
| 15 | 1019600193685412853211945813 |
| 16 | 57906086478637532521174425681 |
[5,281,15949,905469,51427345,2920698969, 165875085993,9420532825569,535019698383817, 30385338406252141,1725672517842528533, 98006005364525379169,5566048591606153424165, 316112230152526972676369, 17952941015049437421057421, 1019600193685412853211945813, 57906086478637532521174425681] |