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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 8 |
| 3 | 486 |
| 4 | 221184 |
| 5 | 750000000 |
| 6 | 18895680000000 |
| 7 | 3531604429335150000 |
| 8 | 4891710928142129430528000 |
| 9 | 50181356668275133180188221767680 |
| 10 | 3810801545415429046272000000000000000000 |
| 11 | 2141591602439723039788666936461886800000000000000 |
| 12 | 8904178923323813039189941618529553910755974184960000000000 |
[1,1,8,486,221184,750000000,18895680000000, 3531604429335150000,4891710928142129430528000, 50181356668275133180188221767680, 3810801545415429046272000000000000000000, 2141591602439723039788666936461886800000000000000, 89041789233238130391899416185295539107559741849600\ 00000000] |