n | a(n) |
---|---|
0 | 1 |
1 | -2 |
2 | 2 |
3 | -4 |
4 | 5 |
5 | -10 |
6 | 14 |
7 | -28 |
8 | 42 |
9 | -84 |
10 | 132 |
11 | -264 |
12 | 429 |
13 | -858 |
14 | 1430 |
15 | -2860 |
16 | 4862 |
17 | -9724 |
18 | 16796 |
19 | -33592 |
20 | 58786 |
21 | -117572 |
22 | 208012 |
23 | -416024 |
24 | 742900 |
25 | -1485800 |
26 | 2674440 |
27 | -5348880 |
28 | 9694845 |
29 | -19389690 |
30 | 35357670 |
31 | -70715340 |
32 | 129644790 |
33 | -259289580 |
34 | 477638700 |
35 | -955277400 |
36 | 1767263190 |
37 | -3534526380 |
[1,-2,2,-4,5,-10,14,-28,42,-84,132,-264,429,-858, 1430,-2860,4862,-9724,16796,-33592,58786,-117572, 208012,-416024,742900,-1485800,2674440,-5348880, 9694845,-19389690,35357670,-70715340,129644790, -259289580,477638700,-955277400,1767263190, -3534526380] |