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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 11 |
| 3 | 126 |
| 4 | 4251 |
| 5 | 458494 |
| 6 | 114153198 |
| 7 | 76925689840 |
| 8 | 140147361921752 |
| 9 | 663354662878523133 |
| 10 | 8315652944981928201257 |
[1,11,126,4251,458494,114153198,76925689840, 140147361921752,663354662878523133, 8315652944981928201257] |