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| n | a(n) |
|---|---|
| 1 | 193 |
| 2 | 1361 |
| 3 | 8705 |
| 4 | 58449 |
| 5 | 382849 |
| 6 | 2542369 |
| 7 | 16748161 |
| 8 | 110871041 |
| 9 | 731709057 |
| 10 | 4838473473 |
| 11 | 31954317953 |
| 12 | 211206670209 |
| 13 | 1395251843713 |
| 14 | 9220409667201 |
| 15 | 60918293373569 |
| 16 | 402541765541505 |
| 17 | 2659689937121921 |
| 18 | 17574356285235841 |
[193,1361,8705,58449,382849,2542369,16748161, 110871041,731709057,4838473473,31954317953, 211206670209,1395251843713,9220409667201, 60918293373569,402541765541505,2659689937121921, 17574356285235841] |