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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 17 |
| 3 | 73 |
| 4 | 1789 |
| 5 | 6011 |
| 6 | 1616621 |
| 7 | 2114977 |
| 8 | 111546443 |
| 9 | 2156564419 |
| 10 | 742073813491 |
| 11 | 784009188701 |
| 12 | 3093211012526647 |
| 13 | 1240404920534023 |
| 14 | 3206211009211419509 |
| 15 | 171718219950879367781 |
| 16 | 993969333554296364281 |
| 17 | 6899316550553351234327 |
| 18 | 108706781456610360939660763 |
| 19 | 29365306848773629524600829 |
| 20 | 376147205196163170923414109869 |
[3,17,73,1789,6011,1616621,2114977,111546443, 2156564419,742073813491,784009188701, 3093211012526647,1240404920534023, 3206211009211419509,171718219950879367781, 993969333554296364281,6899316550553351234327, 108706781456610360939660763, 29365306848773629524600829, 376147205196163170923414109869] |