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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 9 |
| 3 | 249 |
| 4 | 14129 |
| 5 | 1362961 |
| 6 | 200409465 |
| 7 | 41812246345 |
| 8 | 11765081428705 |
| 9 | 4298599985014945 |
| 10 | 1980239469431883625 |
| 11 | 1123437678322006300185 |
| 12 | 769950079011855688807185 |
| 13 | 627326819278687159338591665 |
[1,1,9,249,14129,1362961,200409465,41812246345, 11765081428705,4298599985014945, 1980239469431883625,1123437678322006300185, 769950079011855688807185, 627326819278687159338591665] |