n | a(n) |
---|---|
0 | 1 |
1 | -4 |
2 | 16 |
3 | -64 |
4 | 256 |
5 | -1024 |
6 | 4096 |
7 | -16384 |
8 | 65536 |
9 | -262144 |
10 | 1048576 |
11 | -4194304 |
12 | 16777216 |
13 | -67108864 |
14 | 268435456 |
15 | -1073741824 |
16 | 4294967296 |
17 | -17179869184 |
18 | 68719476736 |
19 | -274877906944 |
20 | 1099511627776 |
21 | -4398046511104 |
22 | 17592186044416 |
23 | -70368744177664 |
24 | 281474976710656 |
[1,-4,16,-64,256,-1024,4096,-16384,65536,-262144, 1048576,-4194304,16777216,-67108864,268435456, -1073741824,4294967296,-17179869184,68719476736, -274877906944,1099511627776,-4398046511104, 17592186044416,-70368744177664,281474976710656] |