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| n | a(n) |
|---|---|
| 1 | -5 |
| 2 | -13 |
| 3 | -7 |
| 4 | 157 |
| 5 | 2239 |
| 6 | 29941 |
| 7 | 510403 |
| 8 | 9699559 |
| 9 | 223092719 |
| 10 | 6469693057 |
| 11 | 200560489937 |
| 12 | 7420738134587 |
| 13 | 304250263526971 |
| 14 | 13082761331669767 |
| 15 | 614889782588491129 |
| 16 | 32589158477190044419 |
| 17 | 1922760350154212638733 |
| 18 | 117288381359406970982911 |
[-5,-13,-7,157,2239,29941,510403,9699559, 223092719,6469693057,200560489937,7420738134587, 304250263526971,13082761331669767, 614889782588491129,32589158477190044419, 1922760350154212638733,117288381359406970982911] |