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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 549 |
| 4 | 202581 |
| 5 | 425622681 |
| 6 | 4907003889249 |
| 7 | 302963327126122509 |
| 8 | 98490045052104040328301 |
| 9 | 166544794872251942218390753281 |
| 10 | 1451779137596368920662880897497387769 |
| 11 | 64798450159010700654830227323217753649135349 |
[1,9,549,202581,425622681,4907003889249, 302963327126122509,98490045052104040328301, 166544794872251942218390753281, 1451779137596368920662880897497387769, 64798450159010700654830227323217753649135349] |