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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -449 |
| 3 | -1349 |
| 4 | 604801 |
| 5 | 3033001 |
| 6 | -1357769249 |
| 7 | -9546871949 |
| 8 | 4267426262401 |
| 9 | 38636165278801 |
| 10 | -17244440197445249 |
| 11 | -191107183952049749 |
| 12 | 85168871793401932801 |
| 13 | 1117147665134470577401 |
| 14 | -497120752326266836308449 |
| 15 | -7535151042673431473934749 |
| 16 | 3348029927159627713608096001 |
[1,1,-449,-1349,604801,3033001,-1357769249, -9546871949,4267426262401,38636165278801, -17244440197445249,-191107183952049749, 85168871793401932801,1117147665134470577401, -497120752326266836308449, -7535151042673431473934749, 3348029927159627713608096001] |