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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 512 |
| 4 | 29184 |
| 5 | 13307904 |
| 6 | 5404672512 |
| 7 | 17559792635904 |
| 8 | 50811763602977280 |
| 9 | 1176249454737889112064 |
| 10 | 24250990871047073899451904 |
| 11 | 3999906334177619217671691141120 |
[1,8,512,29184,13307904,5404672512,17559792635904, 50811763602977280,1176249454737889112064, 24250990871047073899451904, 3999906334177619217671691141120] |