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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -2 |
| 3 | 3 |
| 4 | -4 |
| 5 | 2 |
| 6 | 15 |
| 7 | -18 |
| 8 | 9 |
| 9 | -2 |
| 10 | 105 |
| 11 | -120 |
| 12 | 60 |
| 13 | -16 |
| 14 | 2 |
| 15 | 945 |
| 16 | -1050 |
| 17 | 525 |
| 18 | -150 |
| 19 | 25 |
| 20 | -2 |
| 21 | 10395 |
| 22 | -11340 |
| 23 | 5670 |
| 24 | -1680 |
| 25 | 315 |
| 26 | -36 |
| 27 | 2 |
| 28 | 135135 |
| 29 | -145530 |
| 30 | 72765 |
| 31 | -22050 |
| 32 | 4410 |
| 33 | -588 |
| 34 | 49 |
| 35 | -2 |
| 36 | 2027025 |
| 37 | -2162160 |
| 38 | 1081080 |
| 39 | -332640 |
| 40 | 69300 |
| 41 | -10080 |
| 42 | 1008 |
| 43 | -64 |
| 44 | 2 |
[1,1,-2,3,-4,2,15,-18,9,-2,105,-120,60,-16,2,945, -1050,525,-150,25,-2,10395,-11340,5670,-1680,315, -36,2,135135,-145530,72765,-22050,4410,-588,49,-2, 2027025,-2162160,1081080,-332640,69300,-10080, 1008,-64,2] |