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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -4 |
| 3 | 2 |
| 4 | -38 |
| 5 | 3 |
| 6 | -73 |
| 7 | 4 |
| 8 | -68 |
| 9 | 5 |
| 10 | -179 |
| 11 | 6 |
| 12 | -9218 |
| 13 | 7 |
| 14 | -19 |
| 15 | 8 |
| 16 | -3976 |
| 17 | 9 |
| 18 | 18143 |
| 19 | 10 |
| 20 | -89038 |
| 21 | 11 |
| 22 | 426463 |
| 23 | 12 |
| 24 | -118199108 |
| 25 | 13 |
| 26 | 4276511 |
| 27 | 14 |
| 28 | -11874736822 |
| 29 | 15 |
| 30 | 4307920527007 |
| 31 | 16 |
| 32 | -3854660524816 |
| 33 | 17 |
| 34 | 1288843929131 |
| 35 | 18 |
| 36 | -13157635776544491194 |
| 37 | 19 |
| 38 | 1464996956920721 |
| 39 | 20 |
| 40 | -130541359248224699708 |
[1,1,-4,2,-38,3,-73,4,-68,5,-179,6,-9218,7,-19,8, -3976,9,18143,10,-89038,11,426463,12,-118199108, 13,4276511,14,-11874736822,15,4307920527007,16, -3854660524816,17,1288843929131,18, -13157635776544491194,19,1464996956920721,20, -130541359248224699708] |