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| n | a(n) |
|---|---|
| 2 | 2 |
| 3 | 23 |
| 4 | 173 |
| 5 | 2273 |
| 6 | 2273 |
| 7 | 1473743 |
| 8 | 25978223 |
| 9 | 113275433 |
| 10 | 10152454583 |
| 11 | 10152454583 |
| 12 | 27286379112263 |
| 13 | 4509412212537503 |
| 14 | 58057458593326463 |
| 15 | 3420327120832524173 |
| 16 | 178049025375964084613 |
| 17 | 23055638276363375485073 |
| 18 | 1049809665258712924748453 |
| 19 | 110949022999023044736072443 |
| 20 | 7819962464608765026553459733 |
[2,23,173,2273,2273,1473743,25978223,113275433, 10152454583,10152454583,27286379112263, 4509412212537503,58057458593326463, 3420327120832524173,178049025375964084613, 23055638276363375485073,1049809665258712924748453, 110949022999023044736072443, 7819962464608765026553459733] |