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| n | a(n) |
|---|---|
| 2 | 5 |
| 3 | 29 |
| 4 | 197 |
| 5 | 2309 |
| 6 | 30013 |
| 7 | 510451 |
| 8 | 9699667 |
| 9 | 223092791 |
| 10 | 6469693129 |
| 11 | 200560490047 |
| 12 | 7420738134571 |
| 13 | 304250263527139 |
| 14 | 13082761331669881 |
| 15 | 614889782588491043 |
| 16 | 32589158477190044657 |
| 17 | 1922760350154212638159 |
| 18 | 117288381359406970982957 |
| 19 | 7858321551080267055878717 |
| 20 | 557940830126698960967414867 |
[5,29,197,2309,30013,510451,9699667,223092791, 6469693129,200560490047,7420738134571, 304250263527139,13082761331669881, 614889782588491043,32589158477190044657, 1922760350154212638159,117288381359406970982957, 7858321551080267055878717, 557940830126698960967414867] |