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| n | a(n) |
|---|---|
| 0 | -2 |
| 1 | -2 |
| 2 | -1 |
| 3 | 0 |
| 4 | 8 |
| 5 | 4 |
| 6 | 26 |
| 7 | 98 |
| 8 | 68 |
| 9 | 245 |
| 10 | 284 |
| 11 | 941 |
| 12 | 908 |
| 13 | 2921 |
| 14 | 866 |
| 15 | 3038 |
| 16 | 9773 |
| 17 | 95842 |
| 18 | 26864 |
| 19 | 82811 |
| 20 | 776048 |
| 21 | 235984 |
| 22 | 715436 |
| 23 | 2157533 |
| 24 | 14878043 |
| 25 | 27882168 |
| 26 | 16575521 |
| 27 | 116892244 |
| 28 | 82326503 |
| 29 | 515542801 |
| 30 | 1009949246 |
| 31 | 882651721 |
| 32 | 500902958 |
| 33 | 1503356036 |
| 34 | 4511038850 |
| 35 | 13534572662 |
| 36 | 40605902153 |
| 37 | 53101505973 |
| 38 | 21870478820 |
| 39 | 65618808017 |
[-2,-2,-1,0,8,4,26,98,68,245,284,941,908,2921,866, 3038,9773,95842,26864,82811,776048,235984,715436, 2157533,14878043,27882168,16575521,116892244, 82326503,515542801,1009949246,882651721,500902958, 1503356036,4511038850,13534572662,40605902153, 53101505973,21870478820,65618808017] |