n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | -1 |
4 | 2 |
5 | -5 |
6 | 13 |
7 | -33 |
8 | 80 |
9 | -184 |
10 | 402 |
11 | -840 |
12 | 1699 |
13 | -3382 |
14 | 6750 |
15 | -13716 |
16 | 28550 |
17 | -60587 |
18 | 129579 |
19 | -275915 |
20 | 579828 |
21 | -1197649 |
22 | 2431775 |
23 | -4870105 |
24 | 9672634 |
25 | -19173013 |
26 | 38151533 |
27 | -76521331 |
28 | 154941608 |
29 | -316399235 |
30 | 649807589 |
31 | -1337598675 |
32 | 2751021907 |
33 | -5640238583 |
34 | 11513062785 |
35 | -23389948481 |
36 | 47310801199 |
37 | -95345789479 |
38 | 191616365385 |
[1,1,-1,2,-5,13,-33,80,-184,402,-840,1699,-3382, 6750,-13716,28550,-60587,129579,-275915,579828, -1197649,2431775,-4870105,9672634,-19173013, 38151533,-76521331,154941608,-316399235,649807589, -1337598675,2751021907,-5640238583,11513062785, -23389948481,47310801199,-95345789479, 191616365385] |