n | a(n) |
---|---|
0 | 1 |
1 | -1 |
2 | 4 |
3 | -7 |
4 | 18 |
5 | -38 |
6 | 88 |
7 | -195 |
8 | 441 |
9 | -988 |
10 | 2223 |
11 | -4992 |
12 | 11220 |
13 | -25208 |
14 | 56645 |
15 | -127277 |
16 | 285992 |
17 | -642615 |
18 | 1443946 |
19 | -3244514 |
20 | 7290360 |
21 | -16381287 |
22 | 36808421 |
23 | -82707768 |
24 | 185842671 |
25 | -417584688 |
26 | 938304280 |
27 | -2108350576 |
28 | 4737420745 |
29 | -10644887785 |
30 | 23918845740 |
31 | -53745158519 |
32 | 120764274994 |
[1,-1,4,-7,18,-38,88,-195,441,-988,2223,-4992, 11220,-25208,56645,-127277,285992,-642615,1443946, -3244514,7290360,-16381287,36808421,-82707768, 185842671,-417584688,938304280,-2108350576, 4737420745,-10644887785,23918845740,-53745158519, 120764274994] |