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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | -113 |
| 3 | -3059 |
| 4 | 33505 |
| 5 | 2216767 |
| 6 | -11621681 |
| 7 | -2236049291 |
| 8 | -2473358783 |
| 9 | 2880606369655 |
| 10 | 23770401693199 |
| 11 | -4500189506988707 |
| 12 | -73860182366201567 |
| 13 | 8231347125022635439 |
| 14 | 213168973938378948175 |
| 15 | -17176512461982684538427 |
| 16 | -638236193904139635834239 |
[1,7,-113,-3059,33505,2216767,-11621681, -2236049291,-2473358783,2880606369655, 23770401693199,-4500189506988707, -73860182366201567,8231347125022635439, 213168973938378948175,-17176512461982684538427, -638236193904139635834239] |