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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | -8 |
| 4 | -17 |
| 5 | 35 |
| 6 | 72 |
| 7 | -145 |
| 8 | -291 |
| 9 | 584 |
| 10 | 1169 |
| 11 | -2339 |
| 12 | -4680 |
| 13 | 9361 |
| 14 | 18723 |
| 15 | -37448 |
| 16 | -74897 |
| 17 | 149795 |
| 18 | 299592 |
| 19 | -599185 |
| 20 | -1198371 |
| 21 | 2396744 |
| 22 | 4793489 |
| 23 | -9586979 |
| 24 | -19173960 |
| 25 | 38347921 |
| 26 | 76695843 |
| 27 | -153391688 |
| 28 | -306783377 |
| 29 | 613566755 |
| 30 | 1227133512 |
| 31 | -2454267025 |
| 32 | -4908534051 |
| 33 | 9817068104 |
[0,1,3,-8,-17,35,72,-145,-291,584,1169,-2339, -4680,9361,18723,-37448,-74897,149795,299592, -599185,-1198371,2396744,4793489,-9586979, -19173960,38347921,76695843,-153391688,-306783377, 613566755,1227133512,-2454267025,-4908534051, 9817068104] |