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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -2 |
| 2 | 5 |
| 3 | -22 |
| 4 | 293 |
| 5 | -2711 |
| 6 | 65947 |
| 7 | -25351 |
| 8 | 4787053 |
| 9 | -36179867 |
| 10 | 1934943511 |
| 11 | -30066910943 |
| 12 | 68657648659 |
| 13 | -49704534392927 |
| 14 | 2888323549541951 |
| 15 | -405291453396983779 |
| 16 | 5739056879585221501 |
| 17 | -71739598482043345121 |
[1,-2,5,-22,293,-2711,65947,-25351,4787053, -36179867,1934943511,-30066910943,68657648659, -49704534392927,2888323549541951, -405291453396983779,5739056879585221501, -71739598482043345121] |