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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 9 |
| 4 | 239 |
| 5 | 14669 |
| 6 | 2313041 |
| 7 | 915560157 |
| 8 | 915512113455 |
| 9 | 2309733753013069 |
| 10 | 14705975948890342013 |
| 11 | 236286306641789616616527 |
| 12 | 9580759647090339471565196845 |
| 13 | 980341335177418943590433413869387 |
[0,1,9,239,14669,2313041,915560157,915512113455, 2309733753013069,14705975948890342013, 236286306641789616616527, 9580759647090339471565196845, 980341335177418943590433413869387] |