| 1 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 17 |
| 19 | 21 | 23 | 25 | 27 | 29 | 31 | 33 | 35 |
| 37 | 39 | 41 | 43 | 45 | 47 | 49 | 51 | 53 |
| 55 | 57 | 59 | 61 | 63 | 65 | 67 | 69 | 71 |
| -1 | 3 | -5 | 7 | -9 | 11 | -13 | 15 | -17 |
| 19 | -21 | 23 | -25 | 27 | -29 | 31 | -33 | 35 |
| -37 | 39 | -41 | 43 | -45 | 47 | -49 | 51 | -53 |
| 55 | -57 | 59 | -61 | 63 | -65 | 67 | -69 | 71 |
| | | | | | | | | |
| | | | | | | | | |


,
,求
的值.