n | a(n) |
---|---|
1 | 7 |
2 | 26 |
3 | 156 |
4 | 692 |
5 | 3580 |
6 | 17742 |
7 | 88056 |
8 | 439338 |
9 | 2192602 |
10 | 10912392 |
11 | 54394628 |
12 | 271160024 |
13 | 1351103246 |
14 | 6733077562 |
15 | 33557756016 |
16 | 167232569172 |
17 | 833404135538 |
18 | 4153405692526 |
19 | 20698773896328 |
20 | 103153449929238 |
21 | 514074952403758 |
[7,26,156,692,3580,17742,88056,439338,2192602, 10912392,54394628,271160024,1351103246,6733077562, 33557756016,167232569172,833404135538, 4153405692526,20698773896328,103153449929238, 514074952403758] |