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A244493 as a simple table
| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 6 |
| 4 | 265 |
| 5 | 126140 |
| 6 | 855966441 |
| 7 | 102526835994056 |
| 8 | 258081861682902430193 |
[1,6,265,126140,855966441,102526835994056, 258081861682902430193] |