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| n | a(n) |
|---|---|
| 6 | 26 |
| 7 | 170 |
| 8 | 1078 |
| 9 | 6772 |
| 10 | 42366 |
| 11 | 263548 |
| 12 | 1626122 |
| 13 | 9993996 |
| 14 | 61372356 |
| 15 | 376754190 |
| 16 | 2312742484 |
| 17 | 14199997152 |
| 18 | 87223775288 |
| 19 | 536072840284 |
| 20 | 3296748123732 |
| 21 | 20287763348424 |
| 22 | 124932460269594 |
| 23 | 769857062164974 |
| 24 | 4747179317544360 |
| 25 | 29291823451184116 |
| 26 | 180856995405347960 |
[26,170,1078,6772,42366,263548,1626122,9993996, 61372356,376754190,2312742484,14199997152, 87223775288,536072840284,3296748123732, 20287763348424,124932460269594,769857062164974, 4747179317544360,29291823451184116, 180856995405347960] |