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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 49248 |
| 3 | 11042304 |
| 4 | 6770802642 |
| 5 | 2705631701472 |
| 6 | 1359219630420288 |
| 7 | 633774007586896896 |
| 8 | 312343963839774306864 |
| 9 | 152751427857668869125990 |
| 10 | 75972914003765783253275712 |
| 11 | 37915118574439727639476081152 |
| 12 | 19063775719322131645175269693920 |
[1,6,49248,11042304,6770802642,2705631701472, 1359219630420288,633774007586896896, 312343963839774306864,152751427857668869125990, 75972914003765783253275712, 37915118574439727639476081152, 19063775719322131645175269693920] |