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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -3 |
| 3 | 34 |
| 4 | -623 |
| 5 | 15636 |
| 6 | -499277 |
| 7 | 19382686 |
| 8 | -886663647 |
| 9 | 46716323752 |
| 10 | -2786249779829 |
| 11 | 185574001203834 |
| 12 | -13652735530485647 |
| 13 | 1099602989008154476 |
| 14 | -96230900016000250269 |
| 15 | 9092834662610587023286 |
| 16 | -922622745817066477888703 |
| 17 | 100054409045940667152740304 |
[1,1,-3,34,-623,15636,-499277,19382686,-886663647, 46716323752,-2786249779829,185574001203834, -13652735530485647,1099602989008154476, -96230900016000250269,9092834662610587023286, -922622745817066477888703, 100054409045940667152740304] |