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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 11 |
| 3 | 23 |
| 4 | 109 |
| 5 | 211 |
| 6 | 307 |
| 7 | 1021 |
| 8 | 4583 |
| 9 | 42967 |
| 10 | 297779 |
| 11 | 1022443 |
| 12 | 1459811 |
| 13 | 10781809 |
| 14 | 125211211 |
| 15 | 11673806759 |
| 16 | 3019843939831 |
| 17 | 40047392632801 |
| 18 | 88212019638251209 |
| 19 | 444190204424015227 |
| 20 | 57852556614292865039 |
| 21 | 9801250757169593701501 |
| 22 | 64747502900142088755541 |
| 23 | 619216322498658374863033 |
[7,11,23,109,211,307,1021,4583,42967,297779, 1022443,1459811,10781809,125211211,11673806759, 3019843939831,40047392632801,88212019638251209, 444190204424015227,57852556614292865039, 9801250757169593701501,64747502900142088755541, 619216322498658374863033] |