n | a(n) |
---|---|
1 | 2 |
2 | 4 |
3 | -10 |
4 | -116 |
5 | -538 |
6 | -1316 |
7 | 3110 |
8 | 68044 |
9 | 593702 |
10 | 4117564 |
11 | 25598630 |
12 | 149298604 |
13 | 835538342 |
14 | 4545417244 |
15 | 24232768550 |
16 | 127291207564 |
17 | 661279993382 |
18 | 3406640457724 |
19 | 17437000616870 |
20 | 88808710210924 |
21 | 450563930438822 |
22 | 2278977841239004 |
23 | 11499752014647590 |
[2,4,-10,-116,-538,-1316,3110,68044,593702, 4117564,25598630,149298604,835538342,4545417244, 24232768550,127291207564,661279993382, 3406640457724,17437000616870,88808710210924, 450563930438822,2278977841239004, 11499752014647590] |