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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | -1 |
| 3 | 3 |
| 4 | -5 |
| 5 | 1 |
| 6 | 9 |
| 7 | -21 |
| 8 | 12 |
| 9 | -1 |
| 10 | 27 |
| 11 | -81 |
| 12 | 75 |
| 13 | -22 |
| 14 | 1 |
| 15 | 81 |
| 16 | -297 |
| 17 | 378 |
| 18 | -195 |
| 19 | 35 |
| 20 | -1 |
| 21 | 243 |
| 22 | -1053 |
| 23 | 1701 |
| 24 | -1260 |
| 25 | 420 |
| 26 | -51 |
| 27 | 1 |
| 28 | 729 |
| 29 | -3645 |
| 30 | 7128 |
| 31 | -6885 |
| 32 | 3402 |
| 33 | -798 |
| 34 | 70 |
| 35 | -1 |
| 36 | 2187 |
| 37 | -12393 |
| 38 | 28431 |
| 39 | -33858 |
| 40 | 22275 |
| 41 | -7938 |
| 42 | 1386 |
| 43 | -92 |
| 44 | 1 |
| 45 | 6561 |
[1,-1,3,-5,1,9,-21,12,-1,27,-81,75,-22,1,81,-297, 378,-195,35,-1,243,-1053,1701,-1260,420,-51,1,729, -3645,7128,-6885,3402,-798,70,-1,2187,-12393, 28431,-33858,22275,-7938,1386,-92,1,6561] |