n | a(n) |
---|---|
0 | -1 |
1 | -1 |
2 | 1 |
3 | -4 |
4 | 8 |
5 | -19 |
6 | 42 |
7 | -95 |
8 | 213 |
9 | -479 |
10 | 1076 |
11 | -2418 |
12 | 5433 |
13 | -12208 |
14 | 27431 |
15 | -61637 |
16 | 138497 |
17 | -311200 |
18 | 699260 |
19 | -1571223 |
20 | 3530506 |
21 | -7932975 |
22 | 17825233 |
23 | -40052935 |
24 | 89998128 |
25 | -202223958 |
26 | 454393109 |
27 | -1021012048 |
28 | 2294193247 |
29 | -5155005433 |
30 | 11583192065 |
[-1,-1,1,-4,8,-19,42,-95,213,-479,1076,-2418,5433, -12208,27431,-61637,138497,-311200,699260, -1571223,3530506,-7932975,17825233,-40052935, 89998128,-202223958,454393109,-1021012048, 2294193247,-5155005433,11583192065] |