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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 251 |
| 3 | 31591 |
| 4 | 10862713 |
| 5 | 14467532003 |
| 6 | 31797494201591 |
| 7 | 156248170093443583 |
| 8 | 1071839248022015186797 |
| 9 | 13041980716182955257968099 |
| 10 | 318091971114753602661286869511 |
| 11 | 9476548712979446302049526230869201 |
[1,9,251,31591,10862713,14467532003, 31797494201591,156248170093443583, 1071839248022015186797,13041980716182955257968099, 318091971114753602661286869511, 9476548712979446302049526230869201] |