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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | 11 |
| 4 | 23 |
| 5 | 179 |
| 6 | 239 |
| 7 | 359 |
| 8 | 719 |
| 9 | 5039 |
| 10 | 55439 |
| 11 | 665279 |
| 12 | 6486479 |
| 13 | 32432399 |
| 14 | 698377679 |
| 15 | 735134399 |
| 16 | 1102701599 |
| 17 | 20951330399 |
| 18 | 3212537327999 |
| 19 | 149602080797769599 |
| 20 | 299204161595539199 |
| 21 | 2718551763981393634806325317503999 |
[3,5,11,23,179,239,359,719,5039,55439,665279, 6486479,32432399,698377679,735134399,1102701599, 20951330399,3212537327999,149602080797769599, 299204161595539199, 2718551763981393634806325317503999] |