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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 47 |
| 6 | 157 |
| 7 | 593 |
| 8 | 919 |
| 9 | 599 |
| 10 | 66593 |
| 11 | 46687 |
| 12 | 396937 |
| 13 | 467897 |
| 14 | 467899 |
| 15 | 6969647 |
| 16 | 16499897 |
| 17 | 367488959 |
| 18 | 598095997 |
| 19 | 2977884967 |
| 20 | 4977866987 |
| 21 | 2797986889 |
| 22 | 58888728979 |
| 23 | 58987779959 |
| 24 | 679585896989 |
| 25 | 4989996468997 |
[2,3,5,7,47,157,593,919,599,66593,46687,396937, 467897,467899,6969647,16499897,367488959, 598095997,2977884967,4977866987,2797986889, 58888728979,58987779959,679585896989, 4989996468997] |