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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 32 |
| 3 | 4608 |
| 4 | 7077888 |
| 5 | 101921587200 |
| 6 | 19725496300339200 |
| 7 | 49628717475771816345600 |
[1,32,4608,7077888,101921587200,19725496300339200, 49628717475771816345600] |