n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 33 |
5 | 189 |
6 | 1249 |
7 | 9237 |
8 | 74972 |
9 | 659042 |
10 | 6215154 |
11 | 62435805 |
12 | 664459091 |
13 | 7458334388 |
14 | 87979090059 |
15 | 1087309348481 |
16 | 14041705640439 |
17 | 189050930463638 |
18 | 2648140182064473 |
19 | 38521885088392896 |
20 | 580970615943277573 |
[1,1,2,7,33,189,1249,9237,74972,659042,6215154, 62435805,664459091,7458334388,87979090059, 1087309348481,14041705640439,189050930463638, 2648140182064473,38521885088392896, 580970615943277573] |