The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | -1 |
| 4 | -3 |
| 5 | 1 |
| 6 | 1 |
| 7 | -1 |
| 8 | -15 |
| 9 | 1 |
| 10 | 1 |
| 11 | -1 |
| 12 | -3 |
| 13 | 1 |
| 14 | 1 |
| 15 | -9 |
| 16 | -495 |
| 17 | 9 |
| 18 | 1 |
| 19 | -1 |
| 20 | -3 |
| 21 | 1 |
| 22 | 1 |
| 23 | -1 |
| 24 | -15 |
| 25 | 1 |
| 26 | 1 |
| 27 | -1 |
| 28 | -3 |
| 29 | 9 |
| 30 | 81 |
| 31 | -2025 |
| 32 | -467775 |
| 33 | 2025 |
| 34 | 81 |
| 35 | -9 |
| 36 | -3 |
| 37 | 1 |
| 38 | 1 |
| 39 | -1 |
| 40 | -15 |
| 41 | 1 |
| 42 | 1 |
| 43 | -1 |
| 44 | -3 |
| 45 | 1 |
| 46 | 1 |
| 47 | -9 |
| 48 | -495 |
| 49 | 9 |
| 50 | 1 |
| 51 | -1 |
| 52 | -3 |
| 53 | 1 |
| 54 | 1 |
| 55 | -1 |
| 56 | -15 |
| 57 | 9 |
| 58 | 81 |
| 59 | -729 |
| 60 | -19683 |
| 61 | 164025 |
| 62 | 4100625 |
| 63 | -496175625 |
| 64 | -448046589375 |
| 65 | 496175625 |
| 66 | 4100625 |
| 67 | -164025 |
| 68 | -19683 |
| 69 | 729 |
| 70 | 81 |
[1,1,-1,-3,1,1,-1,-15,1,1,-1,-3,1,1,-9,-495,9,1, -1,-3,1,1,-1,-15,1,1,-1,-3,9,81,-2025,-467775, 2025,81,-9,-3,1,1,-1,-15,1,1,-1,-3,1,1,-9,-495,9, 1,-1,-3,1,1,-1,-15,9,81,-729,-19683,164025, 4100625,-496175625,-448046589375,496175625, 4100625,-164025,-19683,729,81] |