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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 140 |
| 3 | 1171 |
| 4 | 68369 |
| 5 | 15035559 |
| 6 | 10716516295 |
| 7 | 23359187769537 |
| 8 | 153210141255907393 |
| 9 | 3015630657158819868437 |
| 10 | 178074077883475758948166301 |
[6,140,1171,68369,15035559,10716516295, 23359187769537,153210141255907393, 3015630657158819868437, 178074077883475758948166301] |