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| n | a(n) |
|---|---|
| 1 | 39 |
| 2 | 481 |
| 3 | 4193 |
| 4 | 34151 |
| 5 | 275243 |
| 6 | 2223913 |
| 7 | 17910863 |
| 8 | 144971845 |
| 9 | 1169783337 |
| 10 | 9467210619 |
| 11 | 76463151051 |
| 12 | 618555984777 |
| 13 | 4998183735285 |
| 14 | 40420906533161 |
| 15 | 326695769416007 |
| 16 | 2641578123513399 |
| 17 | 21352776926914139 |
| 18 | 172637934108286039 |
[39,481,4193,34151,275243,2223913,17910863, 144971845,1169783337,9467210619,76463151051, 618555984777,4998183735285,40420906533161, 326695769416007,2641578123513399, 21352776926914139,172637934108286039] |