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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 3 |
| 3 | 55 |
| 4 | 10 |
| 5 | 255 |
| 6 | 149 |
| 7 | 1676 |
| 8 | 3307 |
| 9 | 18505 |
| 10 | 65498 |
| 11 | 290437 |
| 12 | 1198777 |
| 13 | 5087180 |
| 14 | 21490967 |
| 15 | 90839013 |
| 16 | 384340750 |
| 17 | 1625471539 |
| 18 | 6876513885 |
| 19 | 29091034026 |
| 20 | 123070552817 |
| 21 | 520674602677 |
| 22 | 2202800218342 |
| 23 | 9319394664521 |
| 24 | 39427619066391 |
| 25 | 166806435914930 |
[8,3,55,10,255,149,1676,3307,18505,65498,290437, 1198777,5087180,21490967,90839013,384340750, 1625471539,6876513885,29091034026,123070552817, 520674602677,2202800218342,9319394664521, 39427619066391,166806435914930] |