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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 601368 |
| 3 | 168922341960 |
| 4 | 754152642763392 |
| 5 | 1217128601064427992 |
| 6 | 328713317385409802664 |
| 7 | 44017120053171675291312 |
| 8 | 2562731765801885593512960 |
| 9 | 96219147569870302189360080 |
[0,601368,168922341960,754152642763392, 1217128601064427992,328713317385409802664, 44017120053171675291312,2562731765801885593512960, 96219147569870302189360080] |