n | a(n) |
---|---|
1 | 2 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 51 |
6 | 103 |
7 | 498 |
8 | 1012 |
9 | 4649 |
10 | 42070 |
11 | 89055 |
12 | 738321 |
13 | 3054404 |
14 | 6649146 |
15 | 27548565 |
16 | 210132966 |
17 | 1537632445 |
18 | 3475617204 |
19 | 25067027254 |
20 | 101057153476 |
21 | 230767621110 |
22 | 1638690855904 |
23 | 6592587402477 |
24 | 45739388949584 |
[2,2,4,9,51,103,498,1012,4649,42070,89055,738321, 3054404,6649146,27548565,210132966,1537632445, 3475617204,25067027254,101057153476,230767621110, 1638690855904,6592587402477,45739388949584] |