n | a(n) |
---|---|
1 | 4 |
2 | 28 |
3 | 196 |
4 | 1372 |
5 | 9604 |
6 | 67228 |
7 | 470596 |
8 | 3294172 |
9 | 23059204 |
10 | 161414428 |
11 | 1129900996 |
12 | 7909306972 |
13 | 55365148804 |
14 | 387556041628 |
15 | 2712892291396 |
16 | 18990246039772 |
17 | 132931722278404 |
18 | 930522055948828 |
19 | 6513654391641796 |
20 | 45595580741492572 |
[4,28,196,1372,9604,67228,470596,3294172,23059204, 161414428,1129900996,7909306972,55365148804, 387556041628,2712892291396,18990246039772, 132931722278404,930522055948828,6513654391641796, 45595580741492572] |