| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | -1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 0 |
| 6 | -4 |
| 7 | -4 |
| 8 | 5 |
| 9 | 15 |
| 10 | 4 |
| 11 | -34 |
| 12 | -49 |
| 13 | 35 |
| 14 | 174 |
| 15 | 106 |
| 16 | -363 |
| 17 | -729 |
| 18 | 173 |
| 19 | 2311 |
| 20 | 2266 |
| 21 | -4048 |
| 22 | -11573 |
| 23 | -2001 |
| 24 | 32110 |
| 25 | 45110 |
| 26 | -41692 |
| 27 | -187550 |
| 28 | -103297 |
| 29 | 445119 |
| 30 | 864056 |
| 31 | -301392 |
| 32 | -3033429 |
| 33 | -2820827 |
| 34 | 5900903 |
| 35 | 16076357 |
| 36 | 1596760 |
| 37 | -48162378 |
| 38 | -64931570 |
| 39 | 69966798 |
| 40 | 291036757 |
| 41 | 143307879 |
| 42 | -737616558 |
| 43 | -1374497088 |
| 44 | 610620123 |
| 45 | 5114691723 |
| 46 | 4475615447 |
| 47 | -10618782829 |
[1,-1,-1,1,2,0,-4,-4,5,15,4,-34,-49,35,174,106, -363,-729,173,2311,2266,-4048,-11573,-2001,32110, 45110,-41692,-187550,-103297,445119,864056, -301392,-3033429,-2820827,5900903,16076357, 1596760,-48162378,-64931570,69966798,291036757, 143307879,-737616558,-1374497088,610620123, 5114691723,4475615447,-10618782829] |