n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | -2 |
3 | 7 |
4 | -20 |
5 | 61 |
6 | -182 |
7 | 547 |
8 | -1640 |
9 | 4921 |
10 | -14762 |
11 | 44287 |
12 | -132860 |
13 | 398581 |
14 | -1195742 |
15 | 3587227 |
16 | -10761680 |
17 | 32285041 |
18 | -96855122 |
19 | 290565367 |
20 | -871696100 |
21 | 2615088301 |
22 | -7845264902 |
23 | 23535794707 |
24 | -70607384120 |
25 | 211822152361 |
26 | -635466457082 |
27 | 1906399371247 |
[0,1,-2,7,-20,61,-182,547,-1640,4921,-14762,44287, -132860,398581,-1195742,3587227,-10761680, 32285041,-96855122,290565367,-871696100, 2615088301,-7845264902,23535794707,-70607384120, 211822152361,-635466457082,1906399371247] |