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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | -4 |
| 5 | -67 |
| 6 | -370 |
| 7 | 287 |
| 8 | 30424 |
| 9 | 365465 |
| 10 | 1147258 |
| 11 | -42467557 |
| 12 | -994898540 |
| 13 | -8460851947 |
| 14 | 120733095366 |
| 15 | 5772181319543 |
| 16 | 91988708308272 |
| 17 | -303397037546063 |
| 18 | -57859724492439438 |
| 19 | -1529772040322728013 |
[0,1,2,3,-4,-67,-370,287,30424,365465,1147258, -42467557,-994898540,-8460851947,120733095366, 5772181319543,91988708308272,-303397037546063, -57859724492439438,-1529772040322728013] |