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| n | a(n) |
|---|---|
| 1 | 243 |
| 2 | 2430 |
| 3 | 17346 |
| 4 | 183072 |
| 5 | 1643376 |
| 6 | 15547380 |
| 7 | 140497512 |
| 8 | 1273499256 |
| 9 | 11354964888 |
| 10 | 100764874440 |
| 11 | 886829123676 |
| 12 | 7765850889120 |
| 13 | 67643548943508 |
| 14 | 586749197487720 |
| 15 | 5069733374448192 |
| 16 | 43657996370224608 |
| 17 | 374818434125094900 |
[243,2430,17346,183072,1643376,15547380,140497512, 1273499256,11354964888,100764874440,886829123676, 7765850889120,67643548943508,586749197487720, 5069733374448192,43657996370224608, 374818434125094900] |