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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 999 |
| 4 | 8448 |
| 5 | 5265625 |
| 6 | 48789998784 |
| 7 | 11098889011 |
| 8 | 29142024192 |
| 9 | 18771463736417781 |
| 10 | 0 |
| 11 | 3167141567777651417613 |
[1,4,999,8448,5265625,48789998784,11098889011, 29142024192,18771463736417781,0, 3167141567777651417613] |