n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | -1 |
3 | -2 |
4 | -2 |
5 | 0 |
6 | 2 |
7 | 4 |
8 | 3 |
9 | 0 |
10 | -1 |
11 | 6 |
12 | 28 |
13 | 72 |
14 | 139 |
15 | 242 |
16 | 407 |
17 | 722 |
18 | 1215 |
19 | 2348 |
20 | 3753 |
21 | 7186 |
22 | 9558 |
23 | 21800 |
24 | 16576 |
25 | 61234 |
26 | -7978 |
27 | 226136 |
28 | -446034 |
29 | 1118180 |
30 | -3180033 |
31 | 6428640 |
32 | -24607343 |
33 | 56904504 |
[1,0,-1,-2,-2,0,2,4,3,0,-1,6,28,72,139,242,407, 722,1215,2348,3753,7186,9558,21800,16576,61234, -7978,226136,-446034,1118180,-3180033,6428640, -24607343,56904504] |