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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 8 |
| 2 | 80 |
| 3 | 792 |
| 4 | 7848 |
| 5 | 77760 |
| 6 | 770472 |
| 7 | 7634088 |
| 8 | 75641040 |
| 9 | 749476152 |
| 10 | 7426054728 |
| 11 | 73579777920 |
| 12 | 729052493832 |
| 13 | 7223690445768 |
| 14 | 71574686456400 |
| 15 | 709185392119512 |
| 16 | 7026840707183208 |
| 17 | 69624234893724480 |
| 18 | 689859680408169192 |
[1,8,80,792,7848,77760,770472,7634088,75641040, 749476152,7426054728,73579777920,729052493832, 7223690445768,71574686456400,709185392119512, 7026840707183208,69624234893724480, 689859680408169192] |