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| n | a(n) |
|---|---|
| 6 | 17 |
| 7 | 229 |
| 8 | 1819 |
| 9 | 11172 |
| 10 | 58847 |
| 11 | 280158 |
| 12 | 1242859 |
| 13 | 5238042 |
| 14 | 21245548 |
| 15 | 83685745 |
| 16 | 322225735 |
| 17 | 1218705577 |
| 18 | 4544214608 |
| 19 | 16751906196 |
| 20 | 61188410692 |
| 21 | 221832968059 |
| 22 | 799344529621 |
| 23 | 2865983103387 |
| 24 | 10233713828145 |
| 25 | 36419029944617 |
| 26 | 129245774064864 |
| 27 | 457623216922119 |
[17,229,1819,11172,58847,280158,1242859,5238042, 21245548,83685745,322225735,1218705577,4544214608, 16751906196,61188410692,221832968059,799344529621, 2865983103387,10233713828145,36419029944617, 129245774064864,457623216922119] |