n | a(n) |
---|---|
1 | 1 |
2 | -2 |
3 | -4 |
4 | 8 |
5 | 16 |
6 | -32 |
7 | -64 |
8 | 128 |
9 | 4864 |
10 | -9728 |
11 | -37888 |
12 | 223232 |
13 | 446464 |
14 | -1482752 |
15 | 5586944 |
16 | -11173888 |
17 | -56557568 |
18 | -2490368 |
19 | -4980736 |
20 | 472383488 |
21 | -10851713024 |
22 | 21703426048 |
23 | 90592772096 |
24 | -263779778560 |
25 | -10023631585280 |
26 | -4209210589970432 |
27 | -50541367159422976 |
[1,-2,-4,8,16,-32,-64,128,4864,-9728,-37888, 223232,446464,-1482752,5586944,-11173888, -56557568,-2490368,-4980736,472383488, -10851713024,21703426048,90592772096, -263779778560,-10023631585280,-4209210589970432, -50541367159422976] |