n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 16 |
4 | 61 |
5 | 258 |
6 | 1161 |
7 | 5440 |
8 | 26233 |
9 | 129282 |
10 | 648141 |
11 | 3294864 |
12 | 16943733 |
13 | 87983106 |
14 | 460676625 |
15 | 2429478144 |
16 | 12893056497 |
17 | 68802069506 |
18 | 368961496469 |
19 | 1987323655056 |
20 | 10746633315501 |
21 | 58321460916482 |
22 | 317537398625945 |
[1,2,5,16,61,258,1161,5440,26233,129282,648141, 3294864,16943733,87983106,460676625,2429478144, 12893056497,68802069506,368961496469, 1987323655056,10746633315501,58321460916482, 317537398625945] |