n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | -8 |
3 | 64 |
4 | -128 |
5 | 1024 |
6 | -2048 |
7 | 16384 |
8 | -32768 |
9 | 262144 |
10 | -524288 |
11 | 4194304 |
12 | -8388608 |
13 | 67108864 |
14 | -134217728 |
15 | 1073741824 |
16 | -2147483648 |
17 | 17179869184 |
18 | -34359738368 |
19 | 274877906944 |
20 | -549755813888 |
21 | 4398046511104 |
22 | -8796093022208 |
23 | 70368744177664 |
[1,4,-8,64,-128,1024,-2048,16384,-32768,262144, -524288,4194304,-8388608,67108864,-134217728, 1073741824,-2147483648,17179869184,-34359738368, 274877906944,-549755813888,4398046511104, -8796093022208,70368744177664] |