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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 9 |
| 3 | 3375 |
| 4 | 121550625 |
| 5 | 3101364196875 |
| 6 | 1730690595263722640625 |
| 7 | 376292999446907764908950466328125 |
| 8 | 16950118160085960270323673755750390625 |
| 9 | 90543986887356385297750500755391437150880164126953125 |
[1,1,9,3375,121550625,3101364196875, 1730690595263722640625, 376292999446907764908950466328125, 16950118160085960270323673755750390625, 90543986887356385297750500755391437150880164126953\ 125] |