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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 23 |
| 5 | 101 |
| 6 | 571 |
| 7 | 4211 |
| 8 | 40151 |
| 9 | 481939 |
| 10 | 7083227 |
| 11 | 124498109 |
| 12 | 2566114333 |
| 13 | 61044579689 |
| 14 | 1653951090889 |
| 15 | 50474077479337 |
| 16 | 1718590788936899 |
| 17 | 64758818381898643 |
| 18 | 2681499405853186489 |
| 19 | 121260887431718186231 |
[2,3,7,23,101,571,4211,40151,481939,7083227, 124498109,2566114333,61044579689,1653951090889, 50474077479337,1718590788936899,64758818381898643, 2681499405853186489,121260887431718186231] |