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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | -5 |
| 3 | 19 |
| 4 | 713 |
| 5 | 2377 |
| 6 | 120637 |
| 7 | 259459177 |
| 8 | 1357170301 |
| 9 | 4929659569 |
| 10 | 42608389821509 |
| 11 | 11912739135894001 |
| 12 | 59907396092196739 |
| 13 | 20458385028296632427 |
| 14 | 7926428532945161230909 |
| 15 | 4693751193479184763610081 |
| 16 | 328774885640356760904499183363 |
[0,-5,19,713,2377,120637,259459177,1357170301, 4929659569,42608389821509,11912739135894001, 59907396092196739,20458385028296632427, 7926428532945161230909,4693751193479184763610081, 328774885640356760904499183363] |