n | a(n) |
---|---|
0 | 1 |
1 | -6 |
2 | 6 |
3 | 4 |
4 | 6 |
5 | 12 |
6 | 28 |
7 | 72 |
8 | 198 |
9 | 572 |
10 | 1716 |
11 | 5304 |
12 | 16796 |
13 | 54264 |
14 | 178296 |
15 | 594320 |
16 | 2005830 |
17 | 6843420 |
18 | 23571780 |
19 | 81880920 |
20 | 286583220 |
21 | 1009864680 |
22 | 3580429320 |
23 | 12765008880 |
24 | 45741281820 |
25 | 164668614552 |
26 | 595340375688 |
27 | 2160865067312 |
28 | 7871722745208 |
29 | 28772503827312 |
[1,-6,6,4,6,12,28,72,198,572,1716,5304,16796, 54264,178296,594320,2005830,6843420,23571780, 81880920,286583220,1009864680,3580429320, 12765008880,45741281820,164668614552,595340375688, 2160865067312,7871722745208,28772503827312] |