n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 28 |
4 | 187 |
5 | 1361 |
6 | 10479 |
7 | 83914 |
8 | 691738 |
9 | 5830903 |
10 | 50028259 |
11 | 435454040 |
12 | 3835732631 |
13 | 34128555184 |
14 | 306276957665 |
15 | 2769050552948 |
16 | 25197515469820 |
17 | 230599623819217 |
18 | 2121066298440282 |
19 | 19597929365099640 |
20 | 181814132152022195 |
21 | 1692920612932871541 |
[1,1,5,28,187,1361,10479,83914,691738,5830903, 50028259,435454040,3835732631,34128555184, 306276957665,2769050552948,25197515469820, 230599623819217,2121066298440282, 19597929365099640,181814132152022195, 1692920612932871541] |