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| n | a(n) |
|---|---|
| 1 | 159 |
| 2 | 8934 |
| 3 | 138021 |
| 4 | 1343571 |
| 5 | 10311135 |
| 6 | 68588151 |
| 7 | 415166631 |
| 8 | 2351820039 |
| 9 | 12687791559 |
| 10 | 65945446215 |
| 11 | 332865161799 |
| 12 | 1641053851719 |
| 13 | 7935696378951 |
| 14 | 37761280783431 |
| 15 | 177249667277895 |
| 16 | 822339653125191 |
| 17 | 3776814888617031 |
| 18 | 17193456239838279 |
| 19 | 77664102465799239 |
| 20 | 348399491831563335 |
[159,8934,138021,1343571,10311135,68588151, 415166631,2351820039,12687791559,65945446215, 332865161799,1641053851719,7935696378951, 37761280783431,177249667277895,822339653125191, 3776814888617031,17193456239838279, 77664102465799239,348399491831563335] |