n | a(n) |
---|---|
0 | 0 |
1 | -1 |
2 | 2 |
3 | -5 |
4 | 6 |
5 | -13 |
6 | 10 |
7 | -29 |
8 | 6 |
9 | -69 |
10 | -38 |
11 | -197 |
12 | -250 |
13 | -669 |
14 | -1142 |
15 | -2509 |
16 | -4762 |
17 | -9813 |
18 | -19302 |
19 | -38965 |
20 | -77530 |
21 | -155501 |
22 | -310518 |
23 | -621565 |
24 | -1242554 |
25 | -2485733 |
26 | -4970790 |
27 | -9942309 |
28 | -19883834 |
29 | -39768509 |
30 | -79536118 |
[0,-1,2,-5,6,-13,10,-29,6,-69,-38,-197,-250,-669, -1142,-2509,-4762,-9813,-19302,-38965,-77530, -155501,-310518,-621565,-1242554,-2485733, -4970790,-9942309,-19883834,-39768509,-79536118] |