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| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 246 |
| 3 | 7812 |
| 4 | 580986 |
| 5 | 101596896 |
| 6 | 41869995708 |
| 7 | 40724629633188 |
| 8 | 93574975249028022 |
| 9 | 508279521493590763140 |
| 10 | 6529777647254616589112172 |
| 11 | 198475392061658571459051861720 |
| 12 | 14277440032279343277552357109481028 |
[81,246,7812,580986,101596896,41869995708, 40724629633188,93574975249028022, 508279521493590763140,6529777647254616589112172, 198475392061658571459051861720, 14277440032279343277552357109481028] |