n | a(n) |
---|---|
1 | 4 |
2 | 8 |
3 | 48 |
4 | 242 |
5 | 844 |
6 | 22020 |
7 | 217070 |
8 | 1092747 |
9 | 8870024 |
10 | 221167422 |
11 | 221167422 |
12 | 47255689915 |
13 | 82462576220 |
14 | 1043460553364 |
15 | 79180770078548 |
16 | 3215226335143218 |
17 | 23742453640900972 |
18 | 125781000834058568 |
[4,8,48,242,844,22020,217070,1092747,8870024, 221167422,221167422,47255689915,82462576220, 1043460553364,79180770078548,3215226335143218, 23742453640900972,125781000834058568] |