n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 10 |
4 | 37 |
5 | 141 |
6 | 581 |
7 | 2410 |
8 | 10360 |
9 | 44924 |
10 | 198919 |
11 | 886599 |
12 | 4001741 |
13 | 18167569 |
14 | 83200913 |
15 | 382777451 |
16 | 1771864969 |
17 | 8233910451 |
18 | 38441078019 |
19 | 180044247192 |
20 | 846284724044 |
21 | 3988788929314 |
22 | 18854489257593 |
23 | 89329187127811 |
24 | 424223002744866 |
25 | 2018647242982408 |
26 | 9624634711205182 |
27 | 45967961675464498 |
[1,1,3,10,37,141,581,2410,10360,44924,198919, 886599,4001741,18167569,83200913,382777451, 1771864969,8233910451,38441078019,180044247192, 846284724044,3988788929314,18854489257593, 89329187127811,424223002744866,2018647242982408, 9624634711205182,45967961675464498] |