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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -6 |
| 2 | -41652 |
| 3 | -11504904 |
| 4 | -4378103178 |
| 5 | -1652544433080 |
| 6 | -700184843900712 |
| 7 | -302796005909941632 |
| 8 | -136251754253507319300 |
| 9 | -62421509259448987324542 |
| 10 | -29147951871527035454309160 |
| 11 | -13787807362002100397282325912 |
[1,-6,-41652,-11504904,-4378103178,-1652544433080, -700184843900712,-302796005909941632, -136251754253507319300,-62421509259448987324542, -29147951871527035454309160, -13787807362002100397282325912] |