n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 28 |
5 | 93 |
6 | 315 |
7 | 1091 |
8 | 3855 |
9 | 13797 |
10 | 49929 |
11 | 182361 |
12 | 671088 |
13 | 2485504 |
14 | 9256395 |
15 | 34636833 |
16 | 130150493 |
17 | 490853403 |
18 | 1857283155 |
19 | 7048151355 |
20 | 26817356775 |
21 | 102280151421 |
22 | 390937467284 |
23 | 1497207322929 |
24 | 5744387279808 |
25 | 22076468760335 |
[1,1,3,9,28,93,315,1091,3855,13797,49929,182361, 671088,2485504,9256395,34636833,130150493, 490853403,1857283155,7048151355,26817356775, 102280151421,390937467284,1497207322929, 5744387279808,22076468760335] |