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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 17 |
| 2 | 107 |
| 3 | 693 |
| 4 | 4531 |
| 5 | 29785 |
| 6 | 196419 |
| 7 | 1297863 |
| 8 | 8586301 |
| 9 | 56847741 |
| 10 | 376551555 |
| 11 | 2494950507 |
| 12 | 16533981983 |
| 13 | 109582499195 |
| 14 | 726331242669 |
| 15 | 4814449605487 |
| 16 | 31913168495095 |
| 17 | 211543760702517 |
| 18 | 1402280350135071 |
| 19 | 9295487072185279 |
[1,17,107,693,4531,29785,196419,1297863,8586301, 56847741,376551555,2494950507,16533981983, 109582499195,726331242669,4814449605487, 31913168495095,211543760702517,1402280350135071, 9295487072185279] |