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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 63 |
| 3 | 6705 |
| 4 | 1960804 |
| 5 | 1271288295 |
| 6 | 1541975757831 |
| 7 | 3135880743480163 |
| 8 | 9904953891455450640 |
| 9 | 45915662047529291081589 |
| 10 | 299038026557168514632822455 |
| 11 | 2642895689915240835222121682301 |
| 12 | 30814273315381549790551229559722628 |
[1,63,6705,1960804,1271288295,1541975757831, 3135880743480163,9904953891455450640, 45915662047529291081589, 299038026557168514632822455, 2642895689915240835222121682301, 30814273315381549790551229559722628] |