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A197633 as a simple table
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 170578899504 |
| 4 | 1387752405580695978098914368989316131852701063520729400 |
[0,0,170578899504, 13877524055806959780989143689893161318527010635207\ 29400] |