n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 22 |
5 | 92 |
6 | 422 |
7 | 2074 |
8 | 10754 |
9 | 58202 |
10 | 326240 |
11 | 1882960 |
12 | 11140560 |
13 | 67329992 |
14 | 414499438 |
15 | 2593341586 |
16 | 16458756586 |
17 | 105791986682 |
18 | 687782586844 |
19 | 4517543071924 |
20 | 29949238543316 |
21 | 200234184620736 |
22 | 1349097425104912 |
23 | 9154276618636016 |
24 | 62522506583844272 |
[1,1,2,6,22,92,422,2074,10754,58202,326240, 1882960,11140560,67329992,414499438,2593341586, 16458756586,105791986682,687782586844, 4517543071924,29949238543316,200234184620736, 1349097425104912,9154276618636016, 62522506583844272] |