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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 24 |
| 3 | 58 |
| 4 | 164 |
| 5 | 608 |
| 6 | 2168 |
| 7 | 6955 |
| 8 | 23269 |
| 9 | 80463 |
| 10 | 271633 |
| 11 | 908820 |
| 12 | 3081846 |
| 13 | 10454616 |
| 14 | 35254223 |
| 15 | 119067103 |
| 16 | 402989356 |
| 17 | 1362262739 |
| 18 | 4602409803 |
| 19 | 15559718166 |
| 20 | 52607165051 |
| 21 | 177810355067 |
| 22 | 601025502460 |
| 23 | 2031788683772 |
| 24 | 6868166849601 |
[8,24,58,164,608,2168,6955,23269,80463,271633, 908820,3081846,10454616,35254223,119067103, 402989356,1362262739,4602409803,15559718166, 52607165051,177810355067,601025502460, 2031788683772,6868166849601] |