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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 2529 |
| 3 | 273756 |
| 4 | 135347721 |
| 5 | 244543486040 |
| 6 | 1640648838595724 |
| 7 | 38293825867854082781 |
| 8 | 3176824313417920690502165 |
| 9 | 919253305896358668335124292784 |
[81,2529,273756,135347721,244543486040, 1640648838595724,38293825867854082781, 3176824313417920690502165, 919253305896358668335124292784] |