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| n | a(n) |
|---|---|
| 0 | 3715891200 |
| 1 | 163499212800 |
| 2 | 15695924428800 |
| 3 | 2448564210892800 |
| 4 | 548478383239987200 |
| 5 | 164543514971996160000 |
| 6 | 63184709749246525440000 |
| 7 | 30075921840641346109440000 |
| 8 | 17323730980209415359037440000 |
[3715891200,163499212800,15695924428800, 2448564210892800,548478383239987200, 164543514971996160000,63184709749246525440000, 30075921840641346109440000, 17323730980209415359037440000] |