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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 15 |
| 3 | 35 |
| 4 | 1001 |
| 5 | 46189 |
| 6 | 96577 |
| 7 | 6678671 |
| 8 | 14535931 |
| 9 | 1348781387 |
| 10 | 146078888479 |
| 11 | 18128893780549 |
| 12 | 203079283326684719 |
| 13 | 433601713048867373 |
| 14 | 877779077635511999 |
| 15 | 1816798556036292277 |
| 16 | 39006703653387621491281 |
| 17 | 969956148531489825059765363 |
| 18 | 16439934720872708899318057 |
| 19 | 4483790064773102589474664169 |
| 20 | 1274400211992152128527851190601 |
[6,15,35,1001,46189,96577,6678671,14535931, 1348781387,146078888479,18128893780549, 203079283326684719,433601713048867373, 877779077635511999,1816798556036292277, 39006703653387621491281, 969956148531489825059765363, 16439934720872708899318057, 4483790064773102589474664169, 1274400211992152128527851190601] |