n | a(n) |
---|---|
1 | 1 |
2 | 7 |
3 | 42 |
4 | 245 |
5 | 1428 |
6 | 8323 |
7 | 48510 |
8 | 282737 |
9 | 1647912 |
10 | 9604735 |
11 | 55980498 |
12 | 326278253 |
13 | 1901689020 |
14 | 11083855867 |
15 | 64601446182 |
16 | 376524821225 |
17 | 2194547481168 |
18 | 12790760065783 |
19 | 74550012913530 |
20 | 434509317415397 |
[1,7,42,245,1428,8323,48510,282737,1647912, 9604735,55980498,326278253,1901689020,11083855867, 64601446182,376524821225,2194547481168, 12790760065783,74550012913530,434509317415397] |