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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | -35 |
| 3 | -1057 |
| 4 | 59865 |
| 5 | 5446683 |
| 6 | -726781835 |
| 7 | -133713611977 |
| 8 | 32440474082865 |
| 9 | 10034804733270963 |
| 10 | -3854719922524818035 |
| 11 | -1800259494456990656497 |
| 12 | 1004556790822666566963465 |
[1,3,-35,-1057,59865,5446683,-726781835, -133713611977,32440474082865,10034804733270963, -3854719922524818035,-1800259494456990656497, 1004556790822666566963465] |