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| n | a(n) |
|---|---|
| 1 | 171 |
| 2 | 1115 |
| 3 | 7393 |
| 4 | 49937 |
| 5 | 343299 |
| 6 | 2399159 |
| 7 | 17016861 |
| 8 | 122275189 |
| 9 | 888413951 |
| 10 | 6515113419 |
| 11 | 48143621385 |
| 12 | 357960521241 |
| 13 | 2674701190235 |
| 14 | 20063864595135 |
| 15 | 150970105831061 |
| 16 | 1138711170122141 |
| 17 | 8605011245388247 |
| 18 | 65121221801574931 |
[171,1115,7393,49937,343299,2399159,17016861, 122275189,888413951,6515113419,48143621385, 357960521241,2674701190235,20063864595135, 150970105831061,1138711170122141,8605011245388247, 65121221801574931] |