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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 45 |
| 4 | 441 |
| 5 | 4361 |
| 6 | 43165 |
| 7 | 427285 |
| 8 | 4229681 |
| 9 | 41869521 |
| 10 | 414465525 |
| 11 | 4102785725 |
| 12 | 40613391721 |
| 13 | 402031131481 |
| 14 | 3979697923085 |
| 15 | 39394948099365 |
| 16 | 389969783070561 |
| 17 | 3860302882606241 |
| 18 | 38213059042991845 |
| 19 | 378270287547312205 |
[1,5,45,441,4361,43165,427285,4229681,41869521, 414465525,4102785725,40613391721,402031131481, 3979697923085,39394948099365,389969783070561, 3860302882606241,38213059042991845, 378270287547312205] |