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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | -3 |
| 4 | -6 |
| 5 | 24 |
| 6 | 3 |
| 7 | -183 |
| 8 | 273 |
| 9 | 1131 |
| 10 | -4407 |
| 11 | -3081 |
| 12 | 48360 |
| 13 | -54750 |
| 14 | -396195 |
| 15 | 1282551 |
| 16 | 1860186 |
| 17 | -17122944 |
| 18 | 11240049 |
| 19 | 166745823 |
| 20 | -432682314 |
| 21 | -1054472016 |
| 22 | 6822994737 |
| 23 | -835915197 |
| 24 | -76044224139 |
| 25 | 152526011235 |
| 26 | 587055710271 |
| 27 | -2871405804783 |
| 28 | -1378878506592 |
| 29 | 36081844133766 |
[1,2,3,-3,-6,24,3,-183,273,1131,-4407,-3081,48360, -54750,-396195,1282551,1860186,-17122944,11240049, 166745823,-432682314,-1054472016,6822994737, -835915197,-76044224139,152526011235,587055710271, -2871405804783,-1378878506592,36081844133766] |