n | a(n) |
---|---|
1 | 0 |
2 | -1 |
3 | 4 |
4 | -12 |
5 | 32 |
6 | -80 |
7 | 192 |
8 | -448 |
9 | 1024 |
10 | -2304 |
11 | 5120 |
12 | -11264 |
13 | 24576 |
14 | -53248 |
15 | 114688 |
16 | -245760 |
17 | 524288 |
18 | -1114112 |
19 | 2359296 |
20 | -4980736 |
21 | 10485760 |
22 | -22020096 |
23 | 46137344 |
24 | -96468992 |
25 | 201326592 |
26 | -419430400 |
27 | 872415232 |
28 | -1811939328 |
29 | 3758096384 |
30 | -7784628224 |
31 | 16106127360 |
[0,-1,4,-12,32,-80,192,-448,1024,-2304,5120, -11264,24576,-53248,114688,-245760,524288, -1114112,2359296,-4980736,10485760,-22020096, 46137344,-96468992,201326592,-419430400,872415232, -1811939328,3758096384,-7784628224,16106127360] |