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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | -2 |
| 3 | -21 |
| 4 | 444 |
| 5 | -4043 |
| 6 | -57734 |
| 7 | 4431903 |
| 8 | -137672328 |
| 9 | 1244088553 |
| 10 | 184838420470 |
| 11 | -17069741031981 |
| 12 | 845918682523956 |
| 13 | -8263281816036323 |
| 14 | -3834564826764276110 |
| 15 | 544057197945051822855 |
| 16 | -43762588329819235118352 |
[0,1,-2,-21,444,-4043,-57734,4431903,-137672328, 1244088553,184838420470,-17069741031981, 845918682523956,-8263281816036323, -3834564826764276110,544057197945051822855, -43762588329819235118352] |