n | a(n) |
---|---|
0 | 1 |
1 | 20 |
2 | -62 |
3 | 216 |
4 | -641 |
5 | 1636 |
6 | -3778 |
7 | 8248 |
8 | -17277 |
9 | 34664 |
10 | -66878 |
11 | 125312 |
12 | -229252 |
13 | 409676 |
14 | -716420 |
15 | 1230328 |
16 | -2079227 |
17 | 3460416 |
18 | -5677816 |
19 | 9198424 |
20 | -14729608 |
21 | 23328520 |
22 | -36567242 |
23 | 56774712 |
24 | -87369461 |
25 | 133321908 |
26 | -201825396 |
27 | 303248408 |
28 | -452431503 |
[1,20,-62,216,-641,1636,-3778,8248,-17277,34664, -66878,125312,-229252,409676,-716420,1230328, -2079227,3460416,-5677816,9198424,-14729608, 23328520,-36567242,56774712,-87369461,133321908, -201825396,303248408,-452431503] |