n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 22 |
4 | 182 |
5 | 1996 |
6 | 27412 |
7 | 453160 |
8 | 8767516 |
9 | 194438800 |
10 | 4864250096 |
11 | 135538060384 |
12 | 4163356010728 |
13 | 139784741268160 |
14 | 5093269640966704 |
15 | 200170986137297536 |
16 | 8440841773833141008 |
17 | 380153135554220691712 |
18 | 18212499110682362677312 |
[1,1,4,22,182,1996,27412,453160,8767516,194438800, 4864250096,135538060384,4163356010728, 139784741268160,5093269640966704, 200170986137297536,8440841773833141008, 380153135554220691712,18212499110682362677312] |