n | a(n) |
---|---|
1 | 0 |
2 | 3 |
3 | 43 |
4 | 245 |
5 | 1171 |
6 | 5077 |
7 | 20691 |
8 | 80757 |
9 | 305235 |
10 | 1125333 |
11 | 4067091 |
12 | 14461173 |
13 | 50723091 |
14 | 175867605 |
15 | 603736659 |
16 | 2054728053 |
17 | 6940088019 |
18 | 23284024533 |
19 | 77651501715 |
20 | 257577229557 |
21 | 850273182099 |
22 | 2794463987157 |
23 | 9147385165779 |
[0,3,43,245,1171,5077,20691,80757,305235,1125333, 4067091,14461173,50723091,175867605,603736659, 2054728053,6940088019,23284024533,77651501715, 257577229557,850273182099,2794463987157, 9147385165779] |