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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 47 |
| 3 | 588 |
| 4 | 7073 |
| 5 | 82408 |
| 6 | 977946 |
| 7 | 11746093 |
| 8 | 140398339 |
| 9 | 1673987573 |
| 10 | 19978425920 |
| 11 | 238603437585 |
| 12 | 2848944091708 |
| 13 | 34010711969738 |
| 14 | 406045052968057 |
| 15 | 4847874016932633 |
| 16 | 57879103635687885 |
| 17 | 691015526016683752 |
[3,47,588,7073,82408,977946,11746093,140398339, 1673987573,19978425920,238603437585,2848944091708, 34010711969738,406045052968057,4847874016932633, 57879103635687885,691015526016683752] |