n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | -2 |
4 | -64 |
5 | -238 |
6 | 1024 |
7 | 18478 |
8 | 64256 |
9 | -1078558 |
10 | -16672256 |
11 | -22614242 |
12 | 2401458176 |
13 | 32373060722 |
14 | -117093134336 |
15 | -9756500186162 |
16 | -106877784162304 |
17 | 1553450981649602 |
18 | 64518260702838784 |
19 | 465844716994278718 |
[1,2,4,-2,-64,-238,1024,18478,64256,-1078558, -16672256,-22614242,2401458176,32373060722, -117093134336,-9756500186162,-106877784162304, 1553450981649602,64518260702838784, 465844716994278718] |