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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 925 |
| 4 | 533 |
| 5 | 9161 |
| 6 | 2156041 |
| 7 | 218424061 |
| 8 | 131991001 |
| 9 | 94393093105 |
| 10 | 104640677201 |
| 11 | 198901779305 |
| 12 | 184105084021037 |
| 13 | 385524870425705 |
| 14 | 1708690961560921 |
| 15 | 4775376320803625 |
| 16 | 32236231327801693 |
| 17 | 619813168864541257 |
| 18 | 8470543660088519509 |
[1,5,925,533,9161,2156041,218424061,131991001, 94393093105,104640677201,198901779305, 184105084021037,385524870425705,1708690961560921, 4775376320803625,32236231327801693, 619813168864541257,8470543660088519509] |