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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3124 |
| 2 | 191757120 |
| 3 | 49208861869440 |
| 4 | 33030777426968816640 |
| 5 | 45829974166034718596428800 |
| 6 | 114009204539207742166715857223680 |
| 7 | 462192193445890293982679086838571270144 |
| 8 | 2851153321165202191241172917762717987236478976 |
[1,3124,191757120,49208861869440, 33030777426968816640,45829974166034718596428800, 114009204539207742166715857223680, 462192193445890293982679086838571270144, 2851153321165202191241172917762717987236478976] |