n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 16 |
5 | 51 |
6 | 186 |
7 | 675 |
8 | 2619 |
9 | 10222 |
10 | 41278 |
11 | 168322 |
12 | 699654 |
13 | 2936170 |
14 | 12472461 |
15 | 53415773 |
16 | 230718087 |
17 | 1003219186 |
18 | 4390238536 |
19 | 19317023478 |
20 | 85423978859 |
21 | 379448391283 |
22 | 1692394492863 |
23 | 7576241773049 |
24 | 34031365237595 |
25 | 153338751409238 |
26 | 692894165597139 |
[1,1,2,5,16,51,186,675,2619,10222,41278,168322, 699654,2936170,12472461,53415773,230718087, 1003219186,4390238536,19317023478,85423978859, 379448391283,1692394492863,7576241773049, 34031365237595,153338751409238,692894165597139] |