n | a(n) |
---|---|
1 | 8 |
2 | 26 |
3 | 206 |
4 | 974 |
5 | 8064 |
6 | 38252 |
7 | 316962 |
8 | 1502948 |
9 | 12468758 |
10 | 59122266 |
11 | 490548594 |
12 | 2326075252 |
13 | 19300603720 |
14 | 91520046552 |
15 | 759392572070 |
16 | 3600913438102 |
17 | 29878821186710 |
18 | 141680483207634 |
19 | 1175603702913842 |
20 | 5574521174572456 |
[8,26,206,974,8064,38252,316962,1502948,12468758, 59122266,490548594,2326075252,19300603720, 91520046552,759392572070,3600913438102, 29878821186710,141680483207634,1175603702913842, 5574521174572456] |