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| n | a(n) |
|---|---|
| 1 | 77760 |
| 2 | 1382399778816000 |
| 3 | 98221093640386560 |
| 4 | 1053590173895849103360 |
| 5 | 821095240766161265049600000 |
| 6 | 511883170649353472639948811682935064652736000 |
| 7 | 410719109641406326635474611575828305116907342385175347200 |
[77760,1382399778816000,98221093640386560, 1053590173895849103360, 821095240766161265049600000, 511883170649353472639948811682935064652736000, 41071910964140632663547461157582830511690734238517\ 5347200] |