n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 15 |
5 | 52 |
6 | 201 |
7 | 843 |
8 | 3764 |
9 | 17659 |
10 | 86245 |
11 | 435492 |
12 | 2261769 |
13 | 12033165 |
14 | 65369590 |
15 | 361661809 |
16 | 2033429427 |
17 | 11597912588 |
18 | 67004252081 |
19 | 391599609911 |
20 | 2312726369640 |
21 | 13789161819383 |
22 | 82932744795049 |
23 | 502777950712812 |
24 | 3070529443569777 |
25 | 18879637374473465 |
26 | 116815588935673706 |
27 | 727011479685559453 |
[1,1,2,5,15,52,201,843,3764,17659,86245,435492, 2261769,12033165,65369590,361661809,2033429427, 11597912588,67004252081,391599609911, 2312726369640,13789161819383,82932744795049, 502777950712812,3070529443569777, 18879637374473465,116815588935673706, 727011479685559453] |