n | a(n) |
---|---|
1 | 2 |
2 | 3 |
3 | 10 |
4 | 44 |
5 | 208 |
6 | 1109 |
7 | 6118 |
8 | 35237 |
9 | 207934 |
10 | 1253287 |
11 | 7675826 |
12 | 47646436 |
13 | 299041848 |
14 | 1894604820 |
15 | 12100426672 |
16 | 77824808724 |
17 | 503607919768 |
18 | 3276529572798 |
19 | 21420197993784 |
20 | 140637939255210 |
21 | 926969395669496 |
[2,3,10,44,208,1109,6118,35237,207934,1253287, 7675826,47646436,299041848,1894604820,12100426672, 77824808724,503607919768,3276529572798, 21420197993784,140637939255210,926969395669496] |