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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -2 |
| 3 | 5 |
| 4 | -49 |
| 5 | 497 |
| 6 | -6926 |
| 7 | 116510 |
| 8 | -2325422 |
| 9 | 53538315 |
| 10 | -1397740279 |
| 11 | 40792008435 |
| 12 | -1316056239994 |
| 13 | 46509292766172 |
| 14 | -1786748828967402 |
| 15 | 74139054468535061 |
| 16 | -3304409577659864305 |
| 17 | 157444695280699565069 |
| 18 | -7986085592316390890618 |
| 19 | 429645521271113815480246 |
[1,1,-2,5,-49,497,-6926,116510,-2325422,53538315, -1397740279,40792008435,-1316056239994, 46509292766172,-1786748828967402, 74139054468535061,-3304409577659864305, 157444695280699565069,-7986085592316390890618, 429645521271113815480246] |